Android Wear watches typically have the screen always on, and in the case of the OLED one (LG Urbane) I&#x27;ve got that means bright enough to see my way through a dark room.  I usually wear mine overnight (with the screen off) for sleep tracking, and after 23h it&#x27;s usually around 50%.  I&#x27;d be quite happy suggesting you&#x27;d get two full days&#x27; use out of it, especially if you don&#x27;t keep it awake all night.