the watch be really durable and have stand the test of time . I have drop it sereral time and it still keep work fine . the main reason I give it four star instead of five be the time it take for the satellite to find you at some location that I go to . many time I stand out by the road wait to run for five minute until it finally pick I up . but once it do , it work great and I never run without it ! awesome workout companion . it be cool to see how fast you be go and how far you have run . plug it into you computer and it will map you run on Google Maps and tell you you pace at any certain point so you can see where you need to improve ! it have so many feature that I have not even figure the whole thing out yet . it also keep track of you history right on the watch . really keep you motivate to run when you can get this frequent feedback on progress !