Bluetooth Receiver, YOKKAO Car Bluetooth 4.0 Stereo Music Reciver Hands-Free Car Kit with 3.5mm Aux Input Jack Dual USB Charger for Smartphone Device BLUETOOTH 4.0 TECHNOLOGY - With the latest bluetooth 4.0 technology, suports full-speed transmission and low power consumption. Up to 10 metres range. Supports pairing two smarts devices at once. You will never miss a call again with this Bluetooth receiver. AUTO CONNECTION - Automatically power on and connect to the last paired device when starting the car. Pair two Bluetooth devices at once. Play music and answer calls from two separate devices without disconnecting and repairing. DUAIL USB PORTS - Car charger power supply, 5V/2.1A dual USB ports allowing you to high speed charge your smart-phone or pad while enjoying music.With two USB ports, perfect for rapid-speed charging for any two devices in the same time. SIRI FUNCTION - Control almost all receiver and phone functions with a single button, including Siri function for ios systems Phone. Activates Siri when control button is pressed for 2~3 seconds.(Note: some times you will need to press the control button twice (short-press to wake it up and then long-press for 1~2 seconds) SIMPLY DESIGN ADN PROTABLE - the receiver is very small, only has 40g(0.09lb). There has magnetic base with 3M adhesive, you can stick the base on your car or carry it to any place you want.