LSoug Bluetooth 4.0 Receiver Dual Port Car Charger + Magnetic Mounts + Built-in MIC & 3.5mm Aux Cabl Car,Speakerphone, Wireless Hands-free Talking&Music Car Kit, Mini Bluetooth Adapter LSoug Bluetooth Receiver for car with aux port Opertaing: Insert the Car Charger to the Car Cigarette Lighter the Power Indicator lit up and the indicator flashes means it's Ready to Pair and Then Insert the 3.5 Audio Plug into Car Aux in Port. Streambot Mini Bluetooth 4.0 Receiver A2DP Wireless Adapter for Home Audio Music Streaming Sound System Hands-Free Wireless Music with Rotatable Knob Adjustment for Audio with 2-Port USB Car Charger