Case / bezel material: Resin Resin Band Mineral Glass Shock Resistant 200-meter water resistance LED backlight (Super Illuminator) Solar powered Time calibration signal reception Time Calibration Signals Station name: DCF77 (Mainflingen, Germany) Frequency: 77.5 kHz Station name: MSF (Anthorn, England) Frequency: 60.0 kHz Station name: WWVB (Fort Collins, United States) Frequency: 60.0 kHz Station name: JJY (Fukushima, Fukuoka/Saga, Japan) Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga) Station name: BPC (Shangqiu City, Henan Province, China) Frequency: 68.5 kHz Digital compass Altimeter Barometer Thermometer Manual data recording of up to 40 records (altitude, barometric pressure / temperature, bearing, time (Time Stamp)) World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off Sunrise, sunset time display Sunrise time and sunset time for specific date, daylight pointers 1/100-second stopwatch Measuring capacity: 999:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) 5 daily alarms (with 1 snooze alarm) Hourly time signal Battery level indicator Power Saving (display goes blank to save power when the watch is left in the dark) Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off Regular timekeeping: Hour, minute, second, pm, month, date, day Accuracy: ±15 seconds per month (with no signal calibration) Approx battery operating time: 8 months on rechargeable battery (operation period with normal use without exposure to light after charge) 23 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Size of case : 55.2 x 53.5 x 18.2mm