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.

I am giving 5 stars for the customer service rep I am giving 5 stars for the customer service I recieved. The watches would get 4 . They are very difficult to figure out (took me 4 days to get them connected to my phone and the app). I ordered 4 watches and 1 won't hold more than 2 bars worth of charge. After contacting customer service they are replacing the watch that won't hold a charge and I was finally able to get them to connect to the app. The customer service rep was very quick to respond and helpful with her responses.

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.

Nothing was ever said about the app… Nothing was ever said about the app that allows this watch to work, the app doesn't work properly judging by all the negative feedback it has received. What good is a watch that requires an app to be able to get all of the functions to work when the app doesn't work! Might be a good idea to get the app working properly before anymore watches are sold!! I intend to post this same review on the Facebook page where they're being sold to warn people about this before they waste $15.00 of their hard earned money on a useless piece of crap!

At first I thought the watch wouldn't… At first I thought the watch wouldn't charge but, I wasn't doing it right. After plugging it in differently, which didn't seem right, it started charging. When I sent an email asking questions I received a promt response.