I have a Samsung Galaxy watch, in standard mode will not last a whole 24 hours, even in energy saving mode it has a very limited battery life, around 36 hours but varies according to use. Never records flight of steps, and the step count originally did not work but does now.
However on the plus side answering phone with the watch is very handy, when on my push bike leave phone in back pack, answer on the watch, maybe that's why short battery life?
Does show text messages, but it beeps that often and often can't see why. Wireless charging just sits on cradle, so no contacts to get muck in, but does not charge that fast, wife has a watch, seems to last a week on a charge, and will charge up in time it takes for her to have a shower. But although hers shows emails, she can't answer phone with it.
I am told the watch only works with some Samsung phones, but never tried setting it up with different phone. Was told it will connect to phone either direct or through wifi, but although in wifi range it has failed to ring when phone has. And people look at you strange when you talk to ones wrist.