Module No. 5344 Case / bezel material: Stainless steel One-touch 3-fold Clasp Stainless Steel Band Mineral Glass Screw Lock Back Black ion plated case Black ion plated band 100-meter water resistance 1-second stopwatchMeasuring capacity: 59'59Measuring modes: Elapsed time, split time, 1st-2nd place times Date display Regular timekeepingAnalog: 3 hands (hour, minute, second),3 dials (24-hour, stopwatch minutes, stopwatch seconds) Accuracy: ±20 seconds per month Approx. battery life: 2 years on SR920SW