Casio Solar Black G-SHOCK GW-7900B-1ER Men's Radio-Controlled Watch

Shock-resistant structure Tough Solar (solar charging system) Radio wave reception function: Automatic reception (up to 6 times/day) / Manual reception Moon data tide graph Approximately 52.4×50.0×17.7mm Size Case: Approx. 52.4 x 50.0 x 17.7 mm Weight Approx. 71 g Specifications ・Shock-resistant structure (Shock Resist) ・20 ATM water resistance ・Tough Solar (solar charging system) ・Radio wave reception function: Automatic reception (up to 6 times/day) / Manual reception, ＜Japan＞ Received radio wave: JJY, Frequency: 40kHz/60kHz (compatible with both Fukushima and Kyushu stations) ＜North America＞ Received radio wave: WWVB, Frequency: 60kHz ＜Europe＞ Received radio wave: MSF/DCF77, Frequency: 60kHz/77.5kHz ＜China＞ Received radio wave: BPC, Frequency: 68.5kHz *When the home time setting is set to a city where reception is possible, the watch will receive signals from the station corresponding to that city. The time difference will be set according to the selected city. • World time: Displays the time in 48 cities (29 time zones) worldwide, with daylight saving time setting function • Moon data (displays moon phase and shape) • Tide graph • Two stopwatches (1/100 second, 1,000-hour timer, with split function), only stopwatch 1 has a 5-second countdown auto-start function • Timer (set unit: 1 minute, maximum set: 24 hours, measured in 1-second increments) Auto-repeat, time-up warning) ・5 multi-alarms (1 with snooze function) ・Hourly time signal ・Full auto calendar ・12/24-hour format display switching ・Low temperature resistance (-20℃) ・Operation sound ON/OFF switching function ・EL backlight (auto light, afterglow function, afterglow duration switching (3 seconds/5 seconds)) ・Sound flash function (alarm/hourly time signal, timer warning/time-up, stopwatch auto-start, flash linked to sound)