Features: Adopting the new version of BluetoothcompatibleV5.0, it can provide the best transmission efficiency, stability, and ultra-low power consumption. Supports LDAC AptX and AptX Low Latency, with high fidelity CDqualitystereo sound streaming Support AAC advanced audio codecfor audio and music storage, suitable for use on mobile phones, tablets, and headphones; Unique 3D surround sound function: With the 3D audio button, you can switch to 3D mode and enjoy high fidelity surround sound from a regular audio source. Integrated microphone for hands-free calls;Continuous streaming and automatic re pairing: Equipped with a high-quality polymer battery of 300mAh, it can provide up to 12 hours of usage time, while supporting charging and streaming, and can automatically re pair with existingpaired devices. Ultra stable connection: Our Bluetoothcompatible audio adapter is equipped with a Bluetoothcompatible5.0 chip, enabling stable pairing, fast transmission, and a wide signal range (33 feet) It can be connected to non Bluetoothcompatiblecar audiosystem, homestereos, wired headphones/speaker, amplifiers/home theaters, and more through 3.5mm AUX ports and 2 RCA ports. Specifications: Material： Plastic Size:approx 6x6x2cm/2.36x2.36x0.79in Model：MR230PRO Bluetoothcompatible: BT5.0 Support: LDAC aptX Wireless Adapter With:3.5mmAUX and 2RCA Battery：Built-in 300mAh Polymer Battery Provide up to 12 hours Plug Adapter：EU/US/UK/AU Package Includes: 1Set AudioReceiver note: Note: This is only a Bluetoothcompatible receiver, not a transmitter. So you can't use it for your TV, keyboards, or mouse. Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment