Not sure if anyone has had this problem but I noticed the part underneath my watch where you plug it in to charge is causing my wrist some irritation. I am now much more conscious of taking my watch off right after I workout but even just one time of forgetting to and sleeping with it (around 12 hours of continuous use) causes the irritation to flare up. This was never an issue before and I have had my watch for about a year. When I first got it I didn't take it off for months at a time so not really sure what changed?