not state of the art bt headset but can confirm is in good working order, only slack part is that you have to stuff is in your ears rather than clinging to your ears. Thats why it has a matching neck strap, so you can hang it around the neck.
I have some serious question wanna ask u Si fu ~
Mine is oil temp meter ~ but the problem is !!!
i read from the manual itz say only water temp need to cut hose between the radiator and engine then put a adaptor...