Prospex Sumo

Affectionately named ‘Sumo’ by Seiko fans - because of its size and shape and the 12 o’clock marker – it’s a substantially strong looking timepiece. Seiko Prospex watches are designed for sports lovers and adventure seekers whether in the water, in the sky or on land. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards.

Movement
Accuracy:-15/+25 seconds per day
Calibre:6R35
Movement Type:Automatic with Manual Winding
Power Reserve:70 Hours

Exterior
Dial Colour:Black
LumiBrite:Lumibrite on hands and indexes
Case Material:Stainless Steel
Strap/Bracelet:Stainless steel
Clasp:Three-fold clasp with secure lock, push button release with extender
Case Diameter:45.0mm
Case Thickness:12.9mm
Case Length:52.6mm
Lug Width:20.0mm

Other Specifications
Water Resistance:20 bar
Crystal Type:Sapphire crystal
Other Specifications:Screw-down crown, Unidirectional rotating bezel
Watch Function:Date display, Stop seconds hand function