SPB433J1
The Seiko Prospex SPB433J1 Black Series Sumo Diver Limited Edition Men Watch brings stealth-inspired design to the legendary Sumo diver’s line. Limited to only 3,500 pieces worldwide, this striking model features a 45mm stainless steel case with hardcoating, black ceramic unidirectional bezel, and a bold black dial enhanced with Lumibrite hands and markers for superior visibility in the dark. Powered by the Calibre 6R35 automatic movement, it delivers a 70-hour power reserve, screw-down crown, and 200-meter water resistance. Presented in a special edition box, it’s a true collector’s timepiece built for both performance and rarity.
Movement
Calibre: 6R35
Movement Type: Automatic with manual winding
Accuracy: -15/+25 seconds per day
Power Reserve: Approx. 72 hours
Jewels: 24
Functions
Date display
Stop seconds hand function
Dial & Hands
Dial Colour: Black
LumiBrite: On hands and indexes
Case
Case Material: Stainless steel with super-hard coating, ceramic bezel
Case Diameter: 45.0mm
Case Thickness: 13.4mm
Case Length (Lug-to-lug): 52.6mm
Crystal Type: Sapphire crystal
Crystal Coating: Anti-reflective coating on inner surface
Bezel: Unidirectional rotating bezel
Crown: Screw-down crown
Case Back: Screw case back with LIMITED EDITION and serial number engraving
Strap/Bracelet
Strap/Bracelet: Stainless steel
Clasp: Three-fold clasp with secure lock and push-button release
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.