SPECIFICATIONS Case size (L× W× H) 51.7 × 49.8 × 14.6 mm Weight 46 g Case and bezel material Resin Band Resin Band Water resistance 100-meter water resistance Power supply and battery life Solar powered Glass Resin Glass World time World time 31 time zones (48 cities + coordinated universal time), city code display, daylight saving on/off Stopwatch 1/100-second stopwatch Measuring capacity: 99:59'59.99'' Measuring modes: Elapsed time, lap time, split time Memory capacity: Up to 120 records (used by lap/split time records and log title screens) Others: lap number (from 001 to 999); Best lap time screen Timer 2 countdown timers Can be used during interval training that alternates between two different paces. Measuring unit: 1 second Input range: 00'05'' to 99'55'' (1-minute increments and 5-second increments) Other: Number of repeats settable from 1 to 10 Alarm/hourly time signal 5 daily alarms (with 1 snooze alarm) Hourly time signal Light LED light Selectable illumination duration, afterglow Light color LED:Amber Calendar Full auto-calendar (to year 2099) Mute feature Button operation tone on/off Energy saving feature Power Saving (display goes blank to save power when the watch is left in the dark) Battery display/alert Battery power indicator Run time Approx. battery operating time: 11 months on rechargeable battery (operation period with normal use without exposure to light after charge) 38 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Accuracy Accuracy: ±30 seconds per month Other features 12/24-hour format Regular timekeeping: Hour, minute, second, pm, year, month, day, day of the week