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Seiko Nautilus Open Heart Mod - Tiffany

Seiko Nautilus Open Heart Mod - Tiffany

✔️ Leather Watch Box + Strap tool kit included

Regular price €229,99 EUR
Regular price €299,99 EUR Sale price €229,99 EUR
Sale Sold out
Taxes Included
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  • 2 Year Warranty
  • 14-Day Returns
  • Made in Portugal
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Specifications

• Seiko NH38 Automatic Movement 🕐

• Waterproof 🌊

• 40mm Case ⌚️

• Transparent Back Piece 🔎

• Leather Watch Box 🐄

Materials

• 316L Stainless Steel Case and Bracelet 🛠️

• Sapphire Crystal Glass 💎

• High-Quality Copper Dial ⭐️

• Water Resistant 🌊

Shipping and Orders

Your order will be shipped within 7-12 business days. You can see our shipping policy by clicking here.

Luxury in All Details

Our luxurious leather case is the perfect complement to our high-quality watches, adding an extra touch of refinement to your experience.

Our customers tell it better than we do!

Excellent

4.7

/ 5

based on 523 reviews

Outstanding Seiko Mods, Worth Every Penny!

I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces! I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces! I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces!

A Beautiful Addition to My Collection!

I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment! I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment! I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment!

Fantastic Quality

I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase! I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase! I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase!

I love it! 😍

The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools. The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools. The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools.

10/10 Experience

I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try. I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try. I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try.

Great Watch for the price

I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot. I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot. I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot.

Outstanding Seiko Mods, Worth Every Penny!

I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces! I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces! I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces!

A Beautiful Addition to My Collection!

I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment! I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment! I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment!

Fantastic Quality

I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase! I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase! I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase!

I love it! 😍

The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools. The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools. The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools.

10/10 Experience

I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try. I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try. I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try.

Great Watch for the price

I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot. I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot. I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot.

Outstanding Seiko Mods, Worth Every Penny!

I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces! I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces! I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces!

A Beautiful Addition to My Collection!

I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment! I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment! I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment!

Fantastic Quality

I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase! I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase! I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase!

I love it! 😍

The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools. The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools. The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools.

10/10 Experience

I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try. I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try. I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try.

Great Watch for the price

I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot. I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot. I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot.

Outstanding Seiko Mods, Worth Every Penny!

I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces! I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces! I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces!

A Beautiful Addition to My Collection!

I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment! I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment! I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment!

Fantastic Quality

I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase! I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase! I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase!

I love it! 😍

The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools. The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools. The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools.

10/10 Experience

I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try. I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try. I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try.

Great Watch for the price

I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot. I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot. I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot.

Outstanding Seiko Mods, Worth Every Penny!

I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces! I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces! I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces!

A Beautiful Addition to My Collection!

I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment! I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment! I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment!

Fantastic Quality

I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase! I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase! I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase!

I love it! 😍

The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools. The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools. The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools.

10/10 Experience

I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try. I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try. I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try.

Great Watch for the price

I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot. I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot. I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot.

Outstanding Seiko Mods, Worth Every Penny!

I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces! I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces! I recently purchased two Seiko Mods from Tempus, and I couldn’t be happier. The quality of the watches is top-notch, with attention to every detail. They really stand out in my collection. The shipping was fast, and the customer service was exceptional. Highly recommend Tempus for any Seiko fan looking for unique pieces!

A Beautiful Addition to My Collection!

I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment! I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment! I absolutely love my Santos Mod from Tempus! The customization is exactly what I wanted, and the craftsmanship is outstanding. The watches feel solid and durable, and they look stunning. I wear them every day. The delivery was on time, and everything was packed carefully. Totally worth the investment!

Fantastic Quality

I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase! I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase! I’ve been a Seiko fan for years, and I recently decided to try Tempus for some mods. The quality is excellent, and the modifications really add personality to the watch. Very happy with the purchase!

I love it! 😍

The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools. The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools. The watch I purchased from Tempus are beautiful and well-crafted. The design and customization are perfect, and the quality is excellent.It's still an incredible watch, but I had to get a few adjustments made to the strap with the included tools.

10/10 Experience

I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try. I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try. I’ve purchased a few Seiko Mods from Tempus, and I’m extremely pleased with the craftsmanship. The quality is top-tier, and the watch designs are exactly what I wanted. It’s perfect for daily wear and looks amazing. The experience buying here is just great, I really recommed everyone to try.

Great Watch for the price

I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot. I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot. I bought a Santos Mod and I am really pleased with the quality , customer service and packaging. Recommend a lot.

FAQ

What is a Seiko Mod?

A Seiko Mod is a customized Seiko watch where parts such as the dial, hands, bezel, or case are modified to create a unique design that reflects personal style.

Why choose Tempus?

At Tempus, we prioritize quality craftsmanship, premium materials, and complete personalization. Our mods are hand-assembled to ensure a perfect blend of style and performance.

Are Seiko Mods reliable?

Yes! Seiko mods are built on the reliable and durable Seiko movements, combined with high-quality aftermarket parts. At Tempus, we ensure every watch undergoes meticulous assembly and testing.

Can I design my own piece?

Absolutely! Our online Creator tool allows you to design your own watch with ease, selecting from a variety of dials, bezels, hands, and more.