2 In 1 Bluetooth Audio Adapter:Bluetooth 5.0 Adapter Provides receiver/transmitter mode, Connect the device via 3.5mm interface, select transmit (TX) mode or receive (RX) mode, and press and hold the power switch for 3 seconds to turn on. Bluetooth 5.0 Transmitter Add Bluetooth functionality to non-Bluetooth headphones or speakers to enjoy high-quality music. Provides a rich and deep sound experience. Bluetooth flashes twice in 4 seconds, indicating connected status. Supports playback while charging. Fashion and beautiful bluetooth transmitter receiver and transmitter. purer sound quality, audio-visual synchronization. Easy to Use, Fashionable and Lightweight Design:Bluetooth pc adapter automatic memory connection function, simple operation, convenient connection, no download, no charging cable, can work for about 8 hours after fully charged. Bluetooth car kit supports audio devices with audio input interface for wireless audio reception and transmission, supports automatic search and connection to Bluetooth devices. Wide Compatibility:Wireless bluetooth adapter plug and Play, Smart Compatibility: Android, IOS System Mobile Phone, TV, Smartphone, Car Radio, Stereo, Headphone, PC, Speaker, Projector, MP4, MP3 Player, Home Audio, Laptops, Tablets, Ideal for streaming audio systems from home or vehicle music.Turn your audio device into a Bluetooth device in seconds. Stable Signal Connection:Bluetooth audio adapter uses Bluetooth 5.0 technology to reduce signal delay, built-in enhanced signal transmission circuit, connection faster and more stable. The distance between the Bluetooth adapter and your Bluetooth device should be less than 10m.