I bbn ought one last september. I swim laps about 3 times a week. 2000 meters each time. After 2 weeks, the watch went bizerk. Sent it back to samsung, they fixed it, & the next time I swam, it did it again. Sent it back to samsung again. I was told that it had water damage & that it could not be repaired. I asked if they were going to replace it, they told me because it had water damage, they would not replace it. I got on twitter & got ahold of a social media support team at Samsung, & explained to them what Samsung support told me. They were able to get them to refund my purchase money, but it took them several months to get to that point. Get the in store warranty to avoid this incredible hassle.