I have 190mm wrist, and this watch fit perfectly. The weight felt like that of a quality watch, the sapphire screen was a dream to touch, the digital crown felt really natural, and the haptic feedback was incredibly subtle and discreet. The heart rate thing on the bottom didn't seem to add much, if any elevation off my wrist. The band was amazing. It was light weight, flexible, and the magnet is very strong. I don't anticipate it slipping at all. As an added bonus, the lady asked what my ship date was and I told her I got the 24th and she told me that I'm only the second person that she's talked to who got that date. Then again I'm not incredibly surprised. There've only been a handful of people in my area that seem to be interested in the watch (I work for an electronics retailer, so the quarry come up often), and Sacramento isn't quite Cupertino after all. I'm so extremely happy with the quality and feel of this product. I've never ordered first gen Apple (other than the iPhone), but I feel very confident in this purchase.