Seiko "Tank" Watch SWR104

Movement
Caliber Number: 4N30
Movement Type: Quartz
Precision: ±15 seconds per month
Battery life: Approx. 3 years

Case/Band
Case Size
Thickness:6.4mm
Diameter:27.2mm
Lug-to-lug:39.0mm
Crystal: Sapphire crystal
Band Material: Cow leather
Distance between lugs: 22

Other Details
Water Resistance: 5 bar
Magnetic Resistance: 4,800 A/m
Weight: 31.0