Solid Bluetooth connection, sounds decent for the money. Powers on and connects automatically when key turned to accessories mode but it's designed to not power on again until a button is pressed if it loses and gains power quickly... So when you turn the starter motor it loses connection and you have to press a button for it to powet up again. The led for the phone symbol on the controller is clear without being distractingly bright. Mic quality seems decent too, so no complaints from other people in the end of the phone. Overall it's decent for the price and fit for purpose but I can't shake the feeling that another unit might be a better choice.