Car Bluetooth AdapterThe receiver allows you to add Bluetooth function to your car or other audio equipment. Fast audio playback or answering phone calls, dual link capability with 2 devices. Wireless transmission and stable signal, giving you a safer driving journey. Hands-free CallingAll-in-one multi-function button designed for easily handling calls and listening to music. You can receive voice commands through the built-in microphone and you don't have to watch the phone in motion. Release your hands which let you focus on safe driving. Plug-and-PlayEasy to use, insert the 3.5mm jack into the auxiliary hole, then connect to Bluetooth, connect as soon as the ignition is on, disconnect once the car is off. Works while charging, no need to worry about running out of battery. Wide CompatibilityBackward compatible with Bluetooth V4.2, V4.1, etc. BT 5.0 and A2DP, AVRCP ensure stable pairing and maintain stable connection with smart phones, tablets up to 50 feet away. Super Battery LifeDesigned with compact size, Comes with a 3.5mm AUX jack, get rid of tangled cables. Enjoy music wirelessly for 5 hours of battery life with once charged for 1.5 hours.