electric muscle massage gun deep tissue massager therapy gun training exercising muscle pain relief body slimming shaping cy200516

electric muscle massage gun deep tissue massager therapy gun training exercising muscle pain relief body slimming shaping description: not the battery is fully charged when it's 99%-100% on the screen; it turns to red when the battery is 60%-70%, you can continue to use it. but it will automatically shut down when the left battery is 30%-40%, which means it is out of battery. you can see that there is electricity still on the screen but that is reserved battery for the electric protection...