I bought this less than a week ago and it will no longer connect with Bluetooth so you can upload data. I have turned Bluetooth on/off, recharged, deleted the app and reinstalled and it still wont connect! The step counter over states the steps. You have to remember to tell it you are going to bed and then it records your sleep time as all deep sleep. The time and date work correctly but that is about it. Dont waste your money on the fitness tracker or the app.
Joe Bud about Power Sensor