




Seikonautilus mod watch rose gold brown
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1 Year Warranty
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14 Day Returns
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Inspired by the iconic Nautilus design, and featuring the prestigious Seiko TMI NH35 automatic movement, we present the Seiko Mod Nautilus. A 40 mm high-end quality watch homage combining the perfect alliance between excellence and accessibility.
*All watches are custom made with third party aftermarket and Non-OEM parts and OEM movements*
Seikonautilus mod watch rose gold brown seiko mod automatic watch
- Movement : Seiko TMI NH35 automatic
- Case Diameter : 40mm (excluding crown)
- Case Material : 316L Stainless steel
- Case Thickness : 12mm
- Lug width : 13mm
- Case Back : Scratch Resistant glass
- Crown : Screwed
- Dial : Aftermarket brown rose gold
- Crystal : Scratch Resistant Sapphire mineral glass
- Bracelet material : 316L Stainless steel
- Clasp : Butterfly style
- Wrist size : Suitable for 14.5cm - 22cm+ (adjustable with extra links leave a note at checkout if needed)
- Lume : Yes
- Water Resistance : 3 ATM
- Comes with bracelet sizing tool

Disclaimer
Circa watch laboratories LLC-FZ is not affiliated with any brands shown, nor do we represent any of the various mentioned watch brands.
We use aftermarket pieces like NH movements handcrafted using different parts from Non-OEM or OEM suppliers from various marketplaces such as Ebay, Etsy, Amazon and Aliexpress, to make unique custom modified pieces. These parts are already manufactured by independent third party suppliers in which we only assemble the watches based on parts available on these marketplaces. We are not responsible for the manufacture of the parts. We only purchase the parts and assemble it.
Handcrafted with both genuine Seiko TMI movements and aftermarket dials and non original cases
Shipping
We offer FREE shipping with our freight forwarder from our warehouse in Hong Kong, who hand it to USPS priority, DHL-ecommerce, Royal Mail express, Deliver it, Last mile, 4PX & Cainiao smart logistics, UniUni or your national post office
Standard shipping - Free
- (7-12 working days at shortest)
- (12-18 working days at most)
Express shipping - $50 (Fedex or UPS)
- (1-3 working days at shortest)
- (3-5 working days at most)
You will then receive your tracking link once we ship your item! Due to the unique assembly from our warehouse, please allow a maximum of 1 week for modification. All times are estimates given from courier. After dispatch any delays are subject to your countries customs authorities which are beyond our control once the courier has the parcel. Patience is a virtue, and these timepieces are worth the wait!
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CRAFTED FROM
316L stainless steel
Our watch cases and straps are sourced from reliable third-party suppliers which are made of 316L stainless steel, known for it's high quality and durability which also improves corrosion-resistance to ensure longevity for your timepiece.

aftermarket case STYLE
simple design
The Nautilus homage style case features a distinct rounded shape octagonal bezel and sleek design similar to the original one made by the late Gerald Genta, with brushed stainless steel, challenging the traditional norms of luxury watchmaking at the time. Unlike the more common precious metals used, this was one of the first high-end watches to use stainless steel, which added a sense of modernity and sportiness to its elegant aesthetic.

aftermarket BRACELET STYLE
integrated links
The integrated bracelet, another standout feature, seamlessly connects to the case, providing both a refined look and exceptional comfort on the wrist. This innovative design not only establishes the bracelet as a symbol of luxury and craftsmanship but also influenced the evolution of sports watches.

aftermarket BRACELET STYLE
classic beauty
Today, the style is revered as a timeless masterpiece, embodying the perfect balance between sophistication and durability, and remains one of the most sought-after and respected models in the world of horology. Our suppliers aftermarket cases perfectly pay homage to it.
Need help?
Frequently Asked Questions
The watch combines robust construction with a luxurious appearance, making it ideal for sports enthusiasts who do not want to compromise on style or functionality. It can also be interchanged with a leather or rubber strap.
The Seiko Mod Nautilus Skeleton watch features a see-through dial that showcases the intricate workings of the NH70 movement inside, making it a standout choice for enthusiasts who appreciate raw mechanical beauty.
To maintain your watch in top condition, avoid exposing it to harsh environments, keep it clean with a soft cloth, and have it serviced by a professional every few years. This will ensure the intricate skeleton mechanism continues to operate flawlessly.
Our watches are equipped with reliable aftermarket Seiko TMI (Time module inc) movements like NH34, NH35, NH36, NH70/72, VK64, known for their precision and durability, ensuring your watch performs excellently under various conditions.
It includes a bracelet sizing tool, allowing you to easily adjust the fit at home. Instructions are provided on our site, or you can visit a professional for assistance. Guide
Water resistance in our Seiko mod Nautilus watches varies by model. Specific details for each mod can be found on the product page, or you can reach out to our customer service for more information. Most of them are up to 3ATM and tested by our professional watchmakers.
Absolutely! Our Seiko mod Nautilus collection offers various customization options to tailor your watch to your style preferences. Contact us for more details on how to personalize your watch or check out our mod form page custom mod form page
Each watch comes with our inhouse one-year warranty covering any defects in materials and craftsmanship, ensuring your peace of mind with every purchase.