I’m quite upset to find these forums now that I have purchased the watch. EXACTLY the same symptoms, deep aching in the wrist, which I feel the the HR monitor, the reason I bought the watch. It’s not the wrist bone, it’s the exact spot where the green light of the sensor hits my wrist. Have traded calls and emails with Garmin and hoping for them to do the right thing, the watch is a week old and the pain was Day 1.