This is my second one. The first one is five years old and has recently started to randomly reset itself. It has gotten quite a beating over those five years. I liked it enough that I recently bought this one to replace it. This watch has a nice big easy to read display. It is very easy to use. I use it for running and I can store the times for many runs before I have to clear out the memory. It is truly waterproof. I have used it under water many time with no problems. The only thing bad about it is that the little plastic band the holds the end of the wrist strap wears out and breaks in about a year. I, however was able to replace it with an appropriately sized o-ring. Also, the battery is somewhat difficult to replace because you have to remove the band to get the back off.