Casio G Shock Mens Rubber Strap Red Digital Watch DW 5600RRB 4DR 200m water resistant Mechanical Excellence: Featuring a hacking AugShopify Mechanical Excellence: Featuring a hacking movement Battery Life: Approximately 3 years battery life: 2 years on CR2016 Exterior Glass Mineral Glass Compatible band size 145 to 205 mm Watch Features 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) 1 second (after 60 minutes) Measuring modes: Elapsed time 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