1.2-in-1 Functionality: This versatile transmitter receiver acts as both a Bluetooth-Compatible receiver and transmitter, making it perfect for use with speakers, , car radios, and computers. It solves the problem of non-Bluetooth-Compatible devices and features a built-in microphone for hands-free calls. Plug and play design ensures convenience and portability.2. 3.5mm Audio Interface: The wireless audio adapter allows you to add Bluetooth-Compatible functionality to 3.5mm jack headphones, providing stable transmission for a wireless, unrestricted listening experience. Enjoy your music freely anytime, anywhere.3. Large Capacity Battery: Equipped with a 200mAh rechargeable battery, the stereo music wireless adapter supports Type-C fast charging and can work while charging, ensuring uninterrupted wireless enjoyment.4.Bluetooth-Compatible 5.3 Technology: Featuring a high-performance Bluetooth-Compatible 5.3 chip, the audio receiver ensures stable, low-latency transmission and supports a range of up to 10 meters, enhancing your audio experience with strength.5. Mini and Portable: The music receiver boasts a sleek, mini design that is comfortable to hold, slip-resistant, and at only 15g. Its compact size makes it easy to carry, perfect for on-the-go use.Interface: TYPE-CWireless Type: Bluetooth-CompatibleWIFI Standard: NoneContent: AUDIOHigh Definition Support: NoneBluetooth-Compatible version: V5.3Transmission distance: 10m without obstacles, it according to the actual environmentFunction: Bluetooth-Compatible playback/reception/transmission/callBattery capacity: 200mAhWorking time: about 15h for reception/about 9h for transmissionCharging interface: Type-cInterface: 3.5mm (AUX) audio plugColour:BlackMaterial:ABSPackage Contents:1 x Bluetooth 5.3 Audio AdapterOnly 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.