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 functions as 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), with support for MP3, WMA, APE, WAV, and FLAC music formats. With a built-in 200mAh battery, the adapter provides up to 6 hours of continuous playback time after a full charge, ensuring uninterrupted entertainment. 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. Specifications: 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: approximately 6 hours Bluetooth receiving function: connects to 1 mobile phone Bluetooth transmitting function: connects to 1 pair of Bluetooth headsets