Precise Japan Quartz Movement - Accuracy: +/- 20 seconds per month Leather Band Mineral Glass 50-meter water resistance Date display Stainless Steel Case, Genuine Leather Strap, Regular Connect Type Buckle Clasp Luminous Hands and Markers Case Size: 45 mm Diameter, 10.5 mm Thickness 3 hands (hour, minute, second) Accuracy: ±20 seconds per month Approx. battery life: 3 years on SR626SW