Review on Oliomp Bluetooth Receiver: Wireless Bluetooth 4.1 Car Adapter & Aux Adapter, Clips Design, Stereo Output for Car/Home Audio System (Black) by Christopher Todd

The sound is great after connecting but everything else was poor. I used this for my car aux so I can use music from my phone via bluetooth. It gets disconnected every time you turn off the device, so you have to reconnect. 8 out of 10 times I had to hold down the button to pair for 10 seconds or more. The other 2 times I just have to connect from my phone with one click and it connects. After pairing/reconnecting several times it started speaking Chinese, I don't understand what it says but most likely Bluetooth is connected or ready to pair? I returned afterwards. If you need a car bluetooth transmitter that connects automatically, this is not the option.