The pedometer works great. The thermometer only works when the internet is on. Heart rate stays the same and only changes when measured again. Otherwise, other functions work well. My battery lasts 7 days. Rating: 7 stars out of 10
The Gerui 12-001 injector is equivalent to the ZOOR injector, which is no longer sold. Over 10 years I used 2 units. Reason – a cracked push spring due to moist tobacco. I would buy as spare parts – 3 push springs. Regards, J.T.