A:AnswerDepends on how much you use it. Normal use, basically just for time and checking the occasional calls you can get two days. If you really have it linked to every function and notifications then it’s a daily charge. About like your usage on your iPhone.
A:AnswerYes it does. I have my watch synced to my iPhone and can make and receive calls and look at fitness and health data collected from my watch on my phone.
A:AnswerIf you get cellular service on your watch set up you can leave phone at home. You phone is necessary to set up watch and you can customize your screens to what is important for you. I would definitely get the bigger screen if older to see your emails. I voice text people back and it is easier then typing on the keyboard.
A:AnswerActually I should have asked “how often does the watch take reading of Oxygen concentration “ I want to find out what is the concentration of oxygen during my sleep
