"Slim square cases meet wide bands in these straight-line designs for a look that's elegant and mature. With auto light, easy read changeable display and silent mode, you can be as noticed as you like. Shock Resistant 100M Water Resistant Auto EL Backlight with Afterglow World Time: 29 time zones (48 cities), city code display, daylight saving on/off 5 Independent Daily Alarms Countdown Timer Measuring unit: 1 second Countdown range: 1 minute to 24 hours Auto Repeat 1/100 second stopwatch Measuring capacity: 59’59.99” Measuring modes: Elapsed time, split time, 1st-2nd place times Hourly Time Signal Button Operation Tone On/Off 3 Alarm Patterns 5 Main Display Area Styles 00-Second Animation on/off Button Tone Operation On/Off Auto Calendar (pre-programmed until the year 2099) 12/24 Hour Formats Accuracy: +/-30 seconds per month Battery CR1616 Approximate Battery Life: 2 Years Module 3077 Case Size: 40.1 x 35.2 x 11.7 mm (Approximately 1 3/8"" Case Width) Total Weight: 38g"