Suunto M9 is a GPS wrist watch. My wife got me one 1.5 yrs ago fo bday present on the recommendation of one of my sailing friends. Highly highly highly recommend not getting one. You can get a decent regular watch and then a foretrex 101/201 for less total than one M9... hard to program, no start timer, lags several seconds behind actual speed. I don't think you can beat the foretrex for its value and performance