SPB381J1
The Seiko Prospex SPB381J1 Automatic GMT Diver’s Men Watch combines professional dive functionality with dual-time convenience. Powered by the Calibre 6R54 automatic movement, it delivers a 72-hour power reserve and features a dedicated GMT hand for tracking a second time zone. The 42mm stainless steel case with hard coating is paired with a green dial, ceramic unidirectional bezel, and sapphire crystal for durability and clarity. With 200-meter water resistance, screw-down crown, and Lumibrite hands and markers, this watch is built for adventurers who need precision both above and below the surface.
Movement
Calibre: 6R54
Movement Type: Automatic with manual winding
Power Reserve: Approx. 72 hours
Jewels: 24
Hand Winding Capability: Yes
Functions
GMT hand for second time zone
24-hour hand
Stop seconds hand function
Dial & Hands
LumiBrite: On hands and hour markers
Case
Case Material: Stainless steel with super-hard coating
Case Diameter: 42.0mm
Case Thickness: 12.9mm
Lug-to-Lug: 48.6mm
Crystal Type: Sapphire crystal
Crystal Coating: Anti-reflective coating on inner surface
Bezel: Ceramic one-way rotating bezel
Crown: Screw-down crown
Case Back: Screw case back
Strap/Bracelet
Band Material: Stainless steel
Clasp: Three-fold clasp with secure lock
Durability
Water Resistance: 20 BAR (200 metres)
For online purchase, you can have bracelet or leather strap adjustments done at any City Chain store. Please bring along your warranty book for the service.