The battery charge lasts weeks but doesn’t warn you when it’s low so it can randomly die if you’re not proactively checking the app. For those who are unsure: you can receive texts but can’t send them from this watch.The sleep tracker, which is one of the main reasons I bought it, is NOT accurate. It says I’m sleeping when I watch TV or even as I’m accruing steps to the bathroom. I’ve even woken up to clean pet vomit in the middle of the night but it doesn’t register me as awake. I wake up often from pain and spasms and it doesn’t register those either. It also doesn’t register when I fall back asleep after being awake for awhile. I’m not sure how well it identifies deep vs. light sleep but it says I’m asleep for several hours more than actual so I’m suspicious of how it labels sleep phases too.The steps seem accurate from what I have observed and it does a little vibration celebration when you’ve hit your daily goal.The blood pressure measurement is 40 points higher than my usual…but I haven’t gotten mine checked elsewhere lately to confirm how far off the watch is. I highly doubt that I went from low/normal bp to high though…All in all: comfortable to wear, good size face, don’t buy for the trackers unless you’re counting steps.goodI returned one of these and received a replacement with the same problem. The screen didn't react to touch as it should.I was actually just shopping for an inexpensive watch when I ran into this. It's pretty amazing for the price and seems to have most of the benefits offered by a far more expensive brand. It looks good, keeps track of my steps and has a good mobile app so I can check out my sleep, my blood pressure, heart rate, my steps, etc.This watch is beautiful and I love it! But it seemed like my step count was WAY up from normal. It counts any motion as a step…. Like rocking my baby grand baby or driving over bumps. So not too accurate with steps but everything else has been fantastic!It does basics stuff I need!!I don't really use advanced tech. I wanted to keep track of walking. I have to start and stop it or clock doesn't come up right.It was a great watch did not last even a year.