Seiko Caliber 8T63 quartz chronograph movement Accuracy of ±15 seconds per month Approximately 3-year battery life 60-minute chronograph with 1/5-second increments 24-hour hand Small seconds sub-dial Date display Sleek gunmetal grey dial with sporty chronograph styling Stainless steel case measures 40mm wide, 45.8mmlug-to-lug, and 11.5mm thick Scratch-resistant sapphire crystal LumiBrite on hands and indexes for enhanced visibility Stainless steel bracelet with three-fold push-button clasp Screw-down case back 100 meters (10 bar) water resistance Magnetic resistance of 4,800 A/m Weight: 155g