I've been on my 3rd watch for about 4 years. It was great but not perfect. My first watch lasted 3 years and unfortunately slipped into the lake when I got caught somewhere and the strap broke. I bet one still works. I exchanged it without hesitation. Display number 2 failed in "gibberish" mode after only 3 months and Casio replaced it under warranty. Number 3 just locked and is still showing the time (warranty expired) but the buttons didn't work. I was able to restart it by removing and reinserting the battery. Watch YouTube videos for this. I use the watch for a variety of hard jobs: housework, camping and hiking, rowing, etc. The altimeter was very useful when hiking in the mountains. The waterproof design is also a big advantage.