It's the ultimate wireless audio solution for your home entertainment setup. Whether you're streaming music on your smartphone, watching TV late at night, or playing games with friends, our versatile adapter ensures seamless audio transmission and reception 2-In-1 Audio Adapter: This adapter is both a receiver and a transmitter, allowing you to easily switch between transmitting audio from your TV, computer, or other devices to Bluetooth headphones or speakers, and receiving audio from your smartphone or tablet to play through wired speakers Bluetooth 5.4 Connection: Experience high-quality audio transmission with minimal latency thanks to advanced Bluetooth technology. Enjoy your favorite music, movies, and games with immersive sound quality TF Card Player: Supports cards up to 64GB (card NOT included), music formats are MP3/WMA/APE/WAV/FLAC With built-in 200mAh battery, our adapter provides 6 hours (after full charge) of uninterrupted play time, ensuring you can enjoy your entertainment uninterrupted Compatible with a wide range of devices, including TVs, computers, laptops, smartphones, tablets, and more. Say goodbye to tangled wires and enjoy wireless freedom from any audio source Specification: Bluetooth version: 5.4 Frequency: 2.4GHz-2.48GHz Bluetooth transmission distance: 10m Bluetooth reception distance: 10m Charging voltage: DC 5V Battery capacity: 200mAh Working time: about 6 hours Bluetooth receiving function: connect to 1 mobile phone Bluetooth transmitting function: connect to 1 pair of Bluetooth headsets