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.

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

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!

Here's the lowdown Purchased January 10, 2021. Received in a few weeks from a fulfillment center. No information about company's physical address. My actual recent experience has been very disappointing : 1) The watch and 2 watchband pieces constantly disconnected 2) The watchband is way too big for me when I could occasionally get it together without falling apart. Even using the last hole in the strap, the watch hung too loose on my wrist to function. I tried sliding the watch up my arm when it was holding together, and one piece of the band or the other disconnected. 3) The information / operating sheet was on a tiny piece of paper with EXTREMELY SMALL print that I, with 20/20 vision, had trouble reading even with a very strong magnifying glass. 4) Because of the preceding problems, I was unable to get any meaningful data from this watch with alleged health data. I would very much like to return this item, but am having difficulty getting a response from freesmartband.com

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.