Prospex Alpinist - SPB121J1

Seiko 'Alpinist' This timepiece is from the Alpinist collection, first launched in 1959 exclusively for the Japanese market. Designed for Japanese ‘Yama-otoko’ mountain men, to be reliable in treacherous terrain, these are part of the Land collection. Hugely popular with many fans worldwide, these new designs are now available globally with an upgraded specification from their original inspiration - a longer power reserve of 70 hours and a glass upgrade to Sapphire glass. Seiko Prospex watches are designed for sports lovers and adventure seekers 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

Watch Case
Case Material: Stainless Steel
Case Thickness: 13.2mm
Case Diameter: 39.5mm
Case Length: 46.4mm
Lug Width: 20.0mm

Exterior
Dial Colour: Green
LumiBrite: Lumibrite on hands and indexes
Clasp: Three-fold clasp with push button release
Strap/Bracelet: Calfskin

Other Specifications
Water Resistance: 20 bar
Crystal Coating: Anti-reflective coating on inner surface
Crystal Type: Sapphire crystal with magnifier
Other Specifications: Screw-down crown
Watch Function: Date display, Stop seconds hand function, Compass