Casio G-Shock In The Sky Gravitymaster Mobile Link Analog Digital GR-B200-1A9 GRB200-1 200M Men's WatchCasio G Shock In The Sky Gravitymaster Mobile Link Analog Digital GR B200 1A9 GRB200 1 200M Men's WatchIts not just a flight tool for comprehensive flight mission support but also counts your steps, keeps tabs on your immediate environment and helps you maintain logs of your activities. A special G SHOCK phone app simplifies your interactions with the watch and its a great deal of fun too! The Mission Function is worth checking out; it makes use of