Oceanmaster – Black Diver
Design your dream watch — Choose every detail · Hand-assembled to order
Free tracked delivery
Hand-assembled
2-year warranty
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
- Water resistance: 10 ATM (100 m / 330 ft) – tested & approved
- Weight: 145 g
WHY THIS MOVEMENT
Your watch is powered by the Seiko NH35A — one of the most trusted automatic movements in modern watchmaking.
What makes it special: it's a true mechanical heart. A weighted rotor spins with your wrist movement, winding the mainspring naturally — no battery, no circuits. The seconds hand sweeps in a smooth, continuous motion that only a real automatic can deliver.
21 jewels, 41 hours of power reserve, and a hacking function that stops the seconds hand when you pull the crown so you can set the time to the exact second.
Tested and regulated before assembly for long-term reliability. This is the same caliber found in watches costing 3–5x more.
SHIPPING, RETURNS & WARRANTY
Free Worldwide Shipping
Tracked delivery to 24+ countries. All duties and taxes prepaid — zero surprises at your door. Delivery within 8–15 business days.
Handcrafted In 3–5 Days
Each watch is assembled by hand, tested for water resistance and accuracy, then carefully packed. No mass production your watch is built for you.
30-day Returns
Not what you expected? Return it within 30 days for a full refund. No questions asked.
2-year Warranty
Covers any manufacturing defect. We repair or replace at no cost, worldwide.
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CRAFTSMANSHIP
EVERY DETAIL, FINISHED BY HAND
Wave-textured dial, luminous dot and baton indices, ceramic diving bezel with liquid metal numerals. Each watch is assembled and inspected individually. No machines, no shortcuts. This is watchmaking, not manufacturing.
QUALITYBUILT
LIKE WATCHES 5X THE PRICE
Solid-link steel bracelet with push-button deployment clasp and satin-brushed finish. Secure, comfortable, built to last. The same construction used by luxury Swiss brands — without the markup.
THE OCEANMASTER
BORN FOR THE DEEP
Screw-down crown, ceramic diving bezel, twisted lugs with mirror-polished flanks. 100m water resistance for real-world performance — from the ocean to the boardroom.
CUSTOM BUILDS
54,000+ DESIGNS CREATED
2,900+ watches delivered worldwide · Custom dials, engravings & casebacks
Free Shipping
Fast & secure delivery, straight to your door
2-Year Warranty
Guaranteed peace of mind & lasting support
Hand-Assembled
Every piece crafted & quality-checked by experts
Designed in France
Refined aesthetics with timeless French elegance
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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.