
Oceanmaster – Black Diver
Design your dream watch — Customization included · Assembled to order
Watch Specifications
- Case: Brushed 316L stainless steel
- Lug to lug: 48 mm
- Diameter: 41 mm
- Thickness: 13.5 mm (including domed sapphire crystal)
- Dial: Oceanmaster-style diver dial – black with green Lumibrite
- Crystal: Sapphire, scratch-resistant with anti-reflective coating
- Case back: Stainless steel or exhibition case back (depending on build)
- Crown: Screw-down 316L stainless steel for improved water resistance
- Hands: Luminous baton hands – green Luminova
- Bezel: Stainless steel, unidirectional diver bezel
- Bracelet: Stainless steel bracelet – 20 mm
- Wrist size: Adjustable 15–21 cm
- Movement: Seiko NH35 Automatic – reliable, accurate, serviceable
- Water resistance: 10 ATM (100 m / 330 ft) – tested & approved
- Weight: 145 g
Japanese Movement – Seiko Automatic
Mouvement : Seiko NH35a Automatic Mechanical
Fonctions :
- Automatic winding
- Hacking seconds
Power Reserve: 41 hours on full charge
Jewels: 24
Shipping & Delivery Times
Free tracked delivery · Estimated: 8–12 days
Hand-assembled in 3–5 business days
Delivery times may vary by destination
30-day returns · 2-year warranty
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Materials
Premium Components
Crafted from 316L stainless steel, protected by a scratch-proof sapphire crystal, and finished with a high-gloss ceramic bezel.
Built for long-lasting durability, exceptional clarity, and a refined luxury feel.

Movement
Japanese Precision
Powered by a Seiko NH35 Automatic movement, tested and regulated for long-term accuracy.
Smooth, reliable and trusted by watch enthusiasts worldwide.
Durability
100 m Water Resistance
Engineered for everyday confidence thanks to a sealed case construction and screw-down crown.
Ready for rain, swimming and daily wear — up to 100 meters.

Wave DIAL
The Wave Dial is the defining signature of the Oceanmaster — a refined, sculpted surface inspired by shifting ocean currents. Its three-dimensional wave pattern catches light from every angle, creating a dynamic interplay of shadows and highlights that brings the dial to life.

Sapphire Glass
Sapphire glass provides exceptional scratch resistance and crystal-clear visibility. Highly durable and second only to diamond in hardness, it ensures long-term clarity and premium protection for your watch.

Character
The Oceanmaster embodies the spirit of modern dive engineering — a bold, versatile tool watch built for depth, adventure, and everyday refinement. Its sculpted 316L steel case, wave-pattern dial, and high-contrast lume markers create a striking blend of functionality and elegance. Designed for reliability in demanding environments, it features precise automatic movement, a unidirectional diver’s bezel, and secure screw-down crowns for enhanced water protection.
Need help?
FREQUENTLY ASKED QUESTIONS
A Chrono mod is a one-of-a-kind timepiece, custom-made and impossible to find in traditional retail stores.
Handcrafted by experts, these watches combine original Seiko components with carefully selected non-Seiko parts, chosen for their quality and style.
Each watch undergoes a series of rigorous tests to ensure its performance and reliability:
- Water Resistance: A thorough check of the water resistance to ensure perfect sealing.
- Demagnetization: A demagnetization process to preserve the proper functioning of sensitive components.
- Chronometer Adjustment: Precise adjustment of the watch to achieve accuracy within -5 to +5 seconds per day.
These quality checks are carried out with care before shipping, ensuring you receive a watch that is ready to use, reliable, and high-performing.
For every order, we provide you with the necessary tool to adjust the bracelet to your wrist yourself.
This allows you to easily customize the fit at home, at no extra cost.









