I don't have one, but many of my co-workers use it. A bit gimmicky, but if you like knowing all pertinent info regarding a ski day, it can be recorded and then downloaded and printed. Looking at a printout shows when you uploaded, how high you went and how quickly. It tells how long it took to ski down and then wait in line. Tells how much time you spent going up, going down and being stationary. All that it does not show is where you were via GPS.