It's the ultimate wireless o 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 o transmission and reception 2-In-1 o Adapter: This adapter is both a receiver and a transmitter, allowing you to easily switch between transmitting o from your TV, computer, or other devices to Bluetooth headphones or speakers, and receiving o from your smartphone or tablet to play through wired speakers Bluetooth 5.4 Connection: Experience high-quality o 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 without interruption 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 o 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