Hii guys ,
I purchase lenovo HX03F band by paytm and then I understand what problem we face if we purchase this
First one is charging by usb that is a big problem because its to risky when you remove your watch belt for charging there are a risk break a usb charger because that is so weak and slim,
Second one is mobile app that is not connected with a band properly when you search again and again then app will show a band connectivity
So I suggest purchase a good band from market don't purchase lenovo band.