Seiko Prospex Alpinist Green Dial Mens Watch SPB121J1

Seiko Prospex Alpinist Green Dial Mens Watch SPB121J1

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 second hand function Date display

Case/Band

Case Material	Stainless steel
Case Size	Thickness:13.2mm Diameter:39.5mm Lug-to-lug:46.4mm
Crystal	Sapphire crystal with magnifier
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	87.0
Features	See-through case back Rotating compass inner ring Screw-down crown