Use function: wireless connection: Ultimate selling point Bluetooth receiver, Bluetooth transmitter, TF card playback, FM radio, hands-free calling, navigation, music player, memory function, multi-function buttons General selling pointSelling point 1: 4 in 1 Support Bluetooth reception (RX) and Bluetooth transmission (TX), FM transmission, TF card playback, 4 in 1 function. Selling point two: USB power supply: USB power supply, no need to worry about battery problems. The Bluetooth receiver is small in size, light in weight, easy to carry, and has a built-in 300mAh battery, which can continuously listen to music for about 6 hours. Easy to operate Selling point three: high-definition LED digital screen, all working conditions are clear at a glance. Suitable for cars without auxiliary interfaces FM connection, Selling point 4: Widely used in speakers, TVs, projectors, cars, computers, laptops, power amplifiers, etc. Selling point five: Visual screen: You can search and display nearby Bluetooth devices at the same time, free to choose. Bluetooth 5.0 Audio Receiver Music Stereo 3D Wireless Adapter TF Card RCA 3.5mm 3.5 Aux Jack for Car Kit Wired Speaker Headphones feature: 4 in 1 Support Bluetooth reception (RX) and Bluetooth transmission (TX), FM transmission, TF card playback, 4 in 1 function. - operating hours USB Power: USB powered, no need to worry about battery issues. The Bluetooth receiver is small in size, light in weight, easy to carry, and has a built-in 300mAh battery, which can continuously listen to music for about 6 hours. easy to operate Multi-function key, support switch/pause/up/down song/volume up/down/source switch/frequency adjustment. LED display High-definition LED digital screen, all working conditions are clear at a glance. For cars without auxiliary interfaces FM connection, Visual screen: You can search and display nearby Bluetooth devices at the same time, free to choose. It also supports FM transmission connection, and the frequency can be freely adjusted between FM 87.5~108MHz. Wide range of applications, stable signal without noise. Bluetooth 5.0 Using Bluetooth 5.0 chip, the Bluetooth transmission distance is 10 meters. High-quality decoding chip, high-definition stereo sound quality. Scope of application Widely used in speakers, TVs, projectors, automobiles, computers, notebook computers, power amplifiers, etc. Specification: Type:Bluetooth Transmitter Receiver Bluetooth version: Bluetooth v5.0 Transmission range: 10m Interface: 3.5mm Support protocol: a2dp/avrcp Product size: 66x43x12mm How to use: free drive, usb fm output Product color: black Product material: high strength pc abs material Music time: about 6 hours Product weight: 25g Basic functions: Bluetooth transmission and reception, TF card playback, browser voice playback, key operation Supported equipment: all kinds of speakers, car audio, desktop computers, notebook computers, TVs, power amplifiers, projectors Package Included: 1*Bluetooth receiver 1*USB cable 1*3.5 audio cable 1*User Manual Note: TF/SD card not included! ! ! 1*Bluetooth receiver 1*USB data cable 1*3.5 audio cable 1*User manual