Apple

I wouldn’t, since it’s a waste of battery. It’s a cool feature on phones, where it’s not always in your pocket and you might want to have a quick glance at notifications or time without tapping the screen. But since a watch is always strapped to your wrist, it’s basically instant to see information on your watch just by turning it towards you. Hence, you can’t even see the always on display on your watch most of the time, it just sits there most of the time and drains battery