Seiko Prospex Alpinist SPB155J1

Seiko Prospex Alpinist SPB155J1

Stainless steel 38mm case with 6R35 automatic movement.

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)
Band Material	Calfskin
Clasp	Three-fold clasp with push button release
Distance between lugs	20

Other Details

Water Resistance	20 bar
Weight	144.0g
Features	See-through case back Screw case back Screw-down crown