The Casio G-Shock The Origin GW-M5610-1ER is a watch that runs on solar energy. Solar cells provide the watch with power. The watch is slightly smaller and lighter in weight than other watches in the G-shock line. The watch features various functions, such as an alarm, stopwatch, timer, world time and date display. The watch is also radio controlled, which means it also automatically picks up the time in other countries via radio signals. As the watch is 20ATM waterproof, you can also wear it during water sport activities and recreational diving. Its shock-resistant construction makes the watch impact resistant. The watch face is covered with strong mineral glass.