🏒 Lucian Marin
It needs a notification LED that will stay on until you clear the notification. Otherwise you will constantly rise your hand. This could also save battery life.
Martijn
My dad ran into one IRL, he said it was pretty visible how the screen was constantly woken up by the wearer moving their arm around. Not just when they raised their wrist to check the screen, but all the time. I think that is a much bigger battery drainer.