Am I in the minority when it comes to this opinion, but when it comes Smartwatches with OLED screens (or even smart phones) I would never use Always on Display. It saves you a second or two over gestures at max to turn on the screen. You have to trade off battery life and screen burn in which will be an inevitably with enough time, the same watch face and having high screen brightness. It just seems like a silly thing to do.