
I really like having a seconds hand on my watchface but I hate that it drains the battery so much.
So I had the idea to only enable the seconds hand when you flick your wrist. There is a 5 seconds timeout that just happens to match my backlight timeout.
In theory this should be as efficient as only updating the face once a minute with just some extra drain when reading the time
Edit: shameless plug to my watchface Casio WVA-M640D