I've had my 235 for a couple years and wear it almost constantly. I've had a little irritation from time to time when I take off my watch however, last week when I took it off i had 3 little burns! I don't know what could have happened other than the HR lights staying on instead of being intermittent, as they usually are. They've since scabbed over, but I'm wary of this happening again! ciq.forums.garmin.com/.../1330874.jpg