Seiko - Swr107P1

Movement Caliber Number 4N30 Movement Type Quartz Precision ±15 seconds per month Battery life Approx. 3 years Case/Band Case Material Stainless steel Case Size Thickness:6.1mm Diameter:19.6mm Lug-to-lug:29.4mm Crystal Sapphire crystal Band Material Cow leather Distance between lugs 15 Other Details Water Resistance 5 bar Magnetic Resistance 4,800 A/m Weight 17.0