Upgrade to Bluetooth 5.1 for faster transmission without delay. Enjoy stable and wireless music streaming in your car or office. Built-in microphone enables hands-free calling. Small and lightweight design, easy to connect and use. Features 1. The latest version of Bluetooth 5.1: Our USB dongle Bluetooth car adapter with integrated 5.1 Bluetooth chip, with USB/AUX dual output mode, devices without USB function can also transmit in AUX mode, faster transmission, no delay. 2. Good performances: the Bluetooth device for car USB thanks to the advanced chipset and advanced technology, the receiver offers better performances, the transmission distance can reach 10 metres/33ft, more stable, no delay. 3. Connect and use: It is not necessary to install driver/software. Bluetooth can quickly match and connect. Pairing: the blue indicator light flashes to indicate that pairing was successful: the blue indicator light continues. 4. Hands-free: built-in microphone. When you make calls with the mobile phone, you can make hands-free calls via the microphone of the Bluetooth receiver to make your driving and office more comfortable. 5. Update your wireless smart lifes: activate your old pair of Bluetooth with stereo system/wired speaker with smartphone/tablet/laptop, enjoy high-quality music and avoid long, boring car journeys. Specification Material: Plastic Color: Black Size: 3.2 x 1.7 cm Weight: 10 g Voltage: DC5V Bluetooth: 5.1 Transmission Distance: 10 meters Package Include: 1 Bluetooth Receiver 1 Cable Charger 1 User Manual