Smart Watch, Bluetooth Touch HD Screen WristWatch Round with Nano SIM & TF Card Slot,Pedometer,Sleep Moniter,SMS,Call and Sedentary Reminder for Android IOS

Maybe I expected too much on this cheap watch.The most disappointing feature of this is battery.I pressed the switch only 3~4 times a day to see the time, but it needs to be recharged at the end of day.Otherwise you'll see a warning message, "Low battery", on the follwing day.Being disappointed with the battery, I did not even think of testing other functions.I would rate even minus five stars if I could do.

First time I have a smart watch. It is really useful and good function. Good to buy.

The back of it did not come off it easy