Feature: 1. Connect the car audio to restore the beautiful sound quality: Support SBC/AAC high-definition audio decoding, restore music details clearly, and listen to the sound all the way 2. Clear call without noise: Built-in microphone, support CVC call noise reduction technology, one button handsfree high-definition call 3. Safe navigation and real-time broadcasting: Mobile phones are connected to the car audio to expand the volume of broadcasting and broadcast in real-time, so as not to miss the next intersection 4. Auto connection after car startup: After the mobile phone and device are paired successfully for the first time, start the car to automatically connect. Good wire, durable, upgraded all-inclusive lengthening net tail, more uniform stress, reinforcement and lengthening, bending resistance, nonfracture 5. 10m transmission distance: The built-in antenna design can realize 0-10m long-distance transmission. 0.3-1.5m flexible, the thread body is made of high resilience TPE material, anti winding, good elasticity, orderly, and not messy. Plug and play, compatible with TF cards with a capacity of less than 32GB on the market, lossless music playback Specification: Model Number: Bluetooth-compatible Receiver Bluetooth name: Y1Pro Bluetooth-compatible version: 5.3 Sensitivity: -42+3dB Signal-to-noise ratio: More than 90dB Supported decoding formats: FLAC/wav/ape/mp3 Bluetooth-compatible delay: Less than 180ms THD+N: Less than 0.1% Frequency response: 20Hz-20KHz Output power range: 33mW RL=16 Ω Effective transmission distance: ≤ 10m/32.8ft Frequency range: 2400-2483.5MHz Body size: 50x20x6mm/1.97x0.79x0.24in Package List： 1x Bluetooth 5.3 Adapter 1x User Manual