Usb Bluetooth Receiver, Bluetooth 5.3 Wireless Audio Adapter 3.5Mm Car Kit Music [Transmission] : The transmission rate is 3 (Mbps), and the longest transmission distance is 10m. Note: This Bluetooth is suitable for older speakers, and 99% cars (some cars do not support usb Bluetooth input, so you need to use its AUX input mode) ?Operation is simpler?:Insert the usb bluetooth receiver and connect your device with it, the name is "H222" immediately transform your device into a fashionable wireless bluetooth device. ? Portable design ?: Small and delicate, portable features let you carry around, it does not need to download APP and plug and play features easily help you to play you phone music ? Technology upgrade ?:Bluetooth 5.3+EDR, support A2DP,AVRCP, AVDTP HFP and HSP, let you enjoy high quality music transmission and more stable Bluetooth pairing ?Wide range of applications?: used in home theaters, mobile phones, karaoke players, speakers, stages, etc.