This product is working satisfactorily. The main unit is detachable and you need to detach to recharge. You get an adapter (USB) which you can connect either to charger or PC USB port for charging. ThoughIt functioning of unit is ok it is too delicate. To charge you have to open it from strap and for this you need to press and this can damage the unit.
Even zero is also not appropriate rating for this watch.very much disappointed after i receive this watch yesterday, its not getting on trying to charge it charger is also not properly attaching with the device,after keeping it for charging around half hour still not getting on.
Feel bad that I'm unable to give 0 star for it. First of all there is no invoice inside for claiming a warranty as assured by the seller. Next after charging the band doesn't function well and is unresponsive most of the time. Though some features like heart rate, blood pressure, sleep monitor looks luring for customers to buy at this price point, it doesn't function well. Also display looks like a crap though acceptable at this price point. I returned this product and requested refund. Amazon do ensure quality of products before selling to customers as we buy believing only the credibility and legacy of your brand name.
Apart from the time, nothing is accurate in this device. For example when you are sitting still, the app shows that you are doing over 20k steps. Should have known it was worthless when the price was so low and the brand unknown.
Bought this product from seller named tirupati traders (sterling). The tracker is unresponsive to touch while not being charged and does not count a single step on pedometer, 100% useless. Kudos to Amazon for protecting the customer from being ripped off.