Case / Bezel Material: Resin/Chrome Plated Stainless Steel Bracelet Resin Crystal 10 Year Battery 30-Record Of TELEMEMO Dual Time 1/100-Second Stopwatch LED Backlight Countdown Timer Multi-Function Alarms Hourly Time Signal Auto-Calendar (To Year 2039) 12/24-Hour Format Regular Timekeeping Accuracy: ±30 Seconds Per Month Deployment Clasp Approximate Size Of Case: 43.1 x 37.7 x 10.4mm