Case / Bezel Material: Resin Band Resin Band Accompanied Attached Band Construction Shock Resistant Carbon Core Guard Structure Water Resistance 200-Meter Water Resistance Power Supply And Battery Life Approx. Battery Life: 2 Years On Cr2016 Exteriorclose Glass Mineral Glass Watch Featuresclose Stopwatch 1/100-Second Stopwatch Measuring Capacity: 00'00''00 59' 59''99 (For The First 60 Minutes) 1:00'00 23: 59' 59 (After 60 Minutes) Measuring Unit: 1/100 Second (For The First 60 Minutes) Multi-Function Alarm Flash Alert Feature Flash Alert Flashes With Buzzer That Sounds For Alarms, Hourly Time Signals Light Electro-Luminescent Backlight Afterglow Light Color El:Blue Green Calendar Full Auto-Calendar (To Year 2099) Accuracy Accuracy: 15 Seconds Per Month Other Features 12/24-Hour Format Regular Timekeeping: Hour, Minute, Second, Pm, Month, Date, Day