Features: Case / Bezel Material: Resin Stainless Steel Bracelet Mineral Crystal Digital Display 10 Years Battery LED Backlight Afterglow Telememo Dual Time 1/100-Second Stopwatch Countdown Timer Multi-Function Alarms Hourly Time Signal Auto-Calendar (To Year 2039) AM/PM Display 12/24-Hour Format Regular Timekeeping Accuracy: ±30 Seconds Per Month Solid Case Back Deployment Clasp 30M Water Resistance Approximate Size Of Case 43.1 x 37.7 x 10.4mm