Seiko Prospex "Baby" Alpinist SPB155 Automatic Green Dial SPB155J1

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

Movement Type

Automatic with manual winding

Precision

+25 to -15 seconds per day

Power reserve

Approx. 70 hours

Jewels

24

Functions

• Stop seconds hand function
• Date display

Case/Band

Case Material

Stainless steel

Case Size

Thickness:12.9mm
Diameter:38.0mm
Lug-to-lug:46.0mm

Crystal

Curved sapphire crystal

Crystal Coating

Anti-reflective coating on inner surface

LumiBrite

Lumibrite on hands and index(es)

Clasp

Three-fold clasp with push button release

Distance between lugs

20

Other Details

Water Resistance

20 bar

Weight

144.0

Features

• Screw-down crown
• See-through & Screw case back