That's my bad then. For some reason I was getting my info mixed up. Anyways, yeah 30 days is a long time but companies always bullshit like that where they say "up to". My galaxy watch 3 is pretty good on battery life, like a day and a half of me just using it regularly for time and heart rate etc. The biggest problem I have is that if I want to sleep track with it I need to remember to put it on the charger when I sit down at my desk and most of the time I forget so it dies on me.