SEIKO PROSPEX SPB103J1 SUMO DIVER AUTOMATIC MEN WATCH
SPB103J1
- Warranty 3 Years
- 25% off at checkout
- Additional 6% off min 2pcs sitewide
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Bold, durable, and reliable — the Seiko Prospex SPB103J1 "Sumo" diver’s watch is built for serious underwater adventures. Featuring a striking green dial with a robust 45mm stainless steel case, this timepiece combines rugged capability with refined detail.
Powered by Seiko’s in-house Calibre 6R35 automatic movement, it offers a 70-hour power reserve, date display, and stop seconds hand function. The sapphire crystal and LumiBrite-treated hands, markers, and bezel ensure superior legibility in deep-sea conditions.
With a unidirectional rotating bezel, screw-down crown, and 200m water resistance, this is a diver’s essential companion, offering both function and style in a bold package.
Movement
Caliber Number: 6R35
Movement Type: Automatic with manual winding
Accuracy: +25 to -15 seconds per day
Power Reserve: Approx. 70 hours
Jewels: 24
Functions: Stop seconds hand function, Date display
Dial & Hands
LumiBrite: On hands, indexes, and bezel
Case
Case Diameter: 45mm
Case Thickness: 12.9mm
Case Length: 52.6mm
Case Material: Stainless steel
Glass: Sapphire crystal
Lug Width: 20mm
Bezel: Unidirectional rotating
Crown: Screw-down crown
Case Back: Screw case back
Strap/Bracelet
Band Material: Stainless steel
Clasp: Three-fold clasp with secure lock, push-button release with extender
Durability
Water Resistance: 20 BAR (200 metres)
Weight: 188g