G-Shock Watch Core Guard Frogman Bluetooth Mens GWF-A1000-1AER. Introducing the most advanced Frogman yet, the GWF-A1000 is the first ever analog 200m diver certified watch. Maintaining the iconic frogman case design our latest model presents an incredibly clear divers watch face displaying a variety of essential features including Home Time, Dual World Time, tide information, and vital dive time measurement. This watches bold design is centred around the large, luminescent hour and minute hands which provide excellent readability when under water. Driven by three dual coil motors the timepieces hands are able to move at high speed indicating essential information when underwater including dive time and surface interval times during your dive. Completely solar powered, battery changes are a thing of the past, powered by any light source, artificial or natural. Boasting built in smart Bluetooth connectivity, the new Frogman allows every setting to be personalised and configured via the users mobile phone.