Not Suitable for Samsung Phones Received my order however unable to connect.Used the tutorial kept on saying disconnected.Then come to find out does not connect to Samsung phones.Does not state that anywhere in ad so wasted my money.Requested a refund but appear to be making excuses.So if you have a Samsung phone not compatible.

Challenger Smart Band CHG304E Challenger Smart Band CHG304E. The fact you can't find them on Google tells you they are hiding for a reason. POS doesn't even see Bluetooth let alone connect. Zero support. AVOID.

It does count steps well It does count steps well, but that is about it. The battery capacity is very weak and I have to charge it every night. Biggest drawback is that it does not measure heart rate, blood pressure or oxygen correctly. Heart rate and blood pressure are always too low and oxygen level is always too high. I have precision instruments to compare the watch with. I also found I had to resync the watch every time I charged it with the ProFit application. And the print on the watch is too small to read any of the messages receive. After two weeks, I have put the watch in my drawer, it just was not worth the bother.

I selected 1 star because I didn't have… I selected 1 star because I didn't have an option in opting out, but I do not give this company any stars. I ordered a watch at the beginning of Aug, still haven't received it. My advice...DO NOT ORDER FROM THIS COMPANY. I have tried numerous times to reach out to them and somehow they are not "reachable".

Bought this watch not realising needed… Bought this watch not realising needed special charger. Ordered charger and 3 weeks later received an mini electric toothbrush. Tried to resolve this but no answers, NOT IMPRESSED. Will not be buying from here again