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
Caliber Number:6R35 - 70 Hour Power Reserve
Movement Type:Automatic with manual winding capacity
Accuracy:+25 to -15 seconds per day
Exterior
Case Material:Stainless steel
Crystal:Sapphire
Crystal Coating:Anti-reflective coating on inner surface
LumiBrite:Lumibrite on hands and indexs
Band Material: Nylon 
Other Details
Water Resistance:200m

Case Size
Thickness:12.9mm
Diameter:38mm
Length:46mm
Other Specifications
Screw case back
Screw-down crown
Other Features
24 jewels
Date display
Stop second hand function