"Bought a olive green sky dweller mod, watch is beautiful. Great communication throughout, definitely would purchase again and highly recommend to anyone looking for a seiko mod watch!"
Nautilus | White Open Heart Rose Gold
A refined 40mm automatic watch pairing a crisp white dial with warm rose-gold-tone accents.
The open-heart dial reveals part of the NH38 movement beneath, adding mechanical depth while maintaining a clean, balanced appearance. Rose-gold-tone hands and hour markers complement the matching case and bracelet for a cohesive, distinctive finish.
Powered by an NH38 automatic movement, the watch is built from 316L stainless steel with a rose-gold-tone finish and protected by sapphire crystal. Its rounded octagonal bezel, integrated bracelet, and transparent exhibition caseback complete the seamless Nautilus-style profile.
Key Features
- 40mm case diameter
- 12mm case thickness
- NH38 automatic movement
- White open-heart dial
- Visible movement detail
- Rose-gold-tone hands and hour markers
- Rounded octagonal bezel
- Full rose-gold-tone finish
- 316L stainless-steel case and bracelet
- Integrated bracelet design
- Sapphire crystal
- Transparent exhibition caseback
- Leather watch box included
- 1-year manufacturing-defects warranty
- Expected delivery: approximately 2–3 weeks
Make It Your Own
This model is sold in the configuration shown. Create your own version through our Nautilus Configurator.
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THE DETAILS
Watch Specifications
316L stainless-steel case with a brushed and polished finish, 40mm case diameter and 12mm thickness.
Japanese NH35 automatic calibre. 21,600 vph (3 Hz). Approximately 41-hour power reserve. Regulated and tested before dispatch. Open-heart and open-worked configurations use an NH38 automatic movement.
Sapphire crystal provides clear, highly scratch-resistant dial protection for everyday wear.
Rated to 30 metres (3 ATM). Suitable for everyday splashes and light water exposure. Not recommended for swimming, snorkelling, or diving.
Integrated 316L stainless-steel bracelet designed to flow seamlessly into the case for a clean, balanced profile. Clasp type may vary by configuration.
Engineered to Last
1 yr
Warranty
Every build is covered for 1 full year.
300 +
Custom Builds
Happy customers and counting.
2–3 wks
Lead Time
Typical order-to-door window.
30 d
Free Returns
Catalog models only — custom builds are final sale.
INCLUDED WITH EVERY PIECE
More Than the Watch
Every NorthernHour arrives boxed and ready — presented in packaging built to protect your piece and to make the moment it arrives feel like the occasion it is.
- Signature NorthernHour Watch Box Your watch arrives inside a uniquely designed faux-leather NorthernHour box, finished with a soft felt-lined interior and secure strap-button closure. Compact enough for travel, it protects your watch at home and on the move.
- Bracelet-Sizing Tool A specialized adjustment tool is included with compatible bracelet models, allowing you to remove or reinstall links and achieve a comfortable fit from home—quickly, easily, and without a trip to the jeweller.
- Watch-Care Cloth Each order includes a soft cleaning cloth for effortlessly removing fingerprints, dust, and light marks, helping keep your watch clean and polished between wears.
Included with every piece — nothing extra to add.
REAL CUSTOMERS
Hear it from our customers
Based on 300+ verified purchases
Hear it from our customers.
Build Your Watch →"I ordered a custom GMT mod, and the entire process was smooth and easy. The team was patient, helpful, and made the watch exactly how I wanted. It turned out amazing, and I’ll definitely be ordering another in the future. Highly recommended!"
"My NorthernHour watch exceeded my expectations. It feels solid, looks even better in person, and arrived beautifully packaged. I also appreciated how easy the website was to use and how clearly the customization options were explained. I’ve already received several compliments and would highly recommend NorthernHour."
"I ordered a custom watch through the NorthernHour website, and the whole process was straightforward from start to finish. The configurator made it easy to choose every detail, and the finished watch looked exactly how I pictured it. The quality and attention to detail really impressed me. I would definitely order again."
Ready to Own Yours?
Join thousands of satisfied customers who wear a NorthernHour mod every day.
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