This Bluetooth receiver supports SBC/AAC high-definition audio decoding to clearly restore music details. Built-in power isolation module to filter current interference; enamelled copper wire core, high-fidelity transmission, no noise, no current sound. Built-in microphone, support CVC call noise reduction technology, one-click free to improve clear calls. After the mobile phone and the device are successfully paired for the first time, start the car to automatically connect. Using high-quality wire, the force is more uniform, and it is resistant to bending without breaking. Bluetooth 5.3 signal is used for stable transmission, no delay and no lag, and listening to music is smoother. The built-in antenna design can realize 0-10m long-distance transmission. The wire body is made of high-rebound TPE material, which can be stretched freely within 0.3-1.5m, anti-winding, and has good elasticity. Compatible with TF cards within 32GB capacity, plug and play. Bluetooth Version: 5.3 Sensitivity: -42and3dB Signal-to-noise Ratio: >90dB Supported Decoding Formats: FLAC/WAV/APE/MP3 Bluetooth Delay: