SEIKO PROSPEX ALPHINIST (AKA) BABY ALPHIST SPB159J1

Caliber Number

6R35
Movement Type

Automatic with manual winding
Accuracy

+25 to -15 seconds per day
Duration

Approx. 70 hours
Exterior
Case Material

Stainless steel
Crystal

Curved sapphire crystal
Crystal Coating

Anti-reflective coating on inner surface
LumiBrite

Lumibrite on hands and indexes
Band Material

Calfskin
Clasp

Three-fold clasp with push button release
Other Details
Water Resistance

20 bar
Case Size

Thickness: 12.9 ㎜
Diameter: 38 ㎜
Length: 46 ㎜
Weight

85.0 g
Other specifications

Screw case back
Screw-down crown
See-through case back
Other features
24 jewels
Date display
Stop second hand function