1. Universal 3.5MM Audio Interface: Achieve audio freedom across all devices with the 3.5mm audio jack, a universal interface in the audio field, perfectly compatible with most audio devices on the market. 2. Advanced Bluetooth-Compatible 5.3 Chip: Enjoy a new wireless experience with low power consumption, high-speed transmission, and strong anti-interference performance, ushering in a of efficient and stable wireless connectivity. 3. Revitalize Classic Speakers with Wireless Sound: Don't let classic sound quality fade away; use the bluetooth-compatible receiving mode to give new life to old speakers for a wireless listening experience. 4. Bluetooth-Compatible Empowerment for Home TV: Easily pair your TV with bluetooth-compatible headphones, speakers, games, and controllers, freeing you from cable constraints. 5. Reproduce CD-Level Sound Quality: With breakthrough audio transmission technology, fully preserve the music's bright high frequencies, full mid-range, and rich low frequencies for an immersive experience. BT 5.3 Adapter Audio Transmitter Receiver 3.5mm AUX Wireless Audio Adapter Support TF Card Wireless Adapter for Home Speakers Wired Headphones Input power: DC 5V Transmission distance: about 10 meters (barrier-free) Charging interface: Type-C Input and output method: 3.5mmAUX audio head BT solution: 5.3 Frequency: 2.4GHz-2.48GHz BT distance: 10M Audio decoding: Battery capacity: 250MAH Battery life: about 15h Charging time: about 2h Product function: BT reception/transmission/call/TF card Supported devices: mobile phone/tablet/computer/TV/amplifier/speaker Product size: 61.00x41.00x17.00mm/2.4x1.61x0.67inch Color: Black Material: ABS Package Contents: 1 * Bluetooth transmitter and receiver 1 * Audio cable 1 * English and Chinese instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.