Size: 5.5 x 3.5 x 1.3 cm 【Bluetooth Technology】Featuring the latest Bluetooth chip, this adapter automatically connects when powered on. Once paired with your mobile phone, simply plug it into the AUX audio jack to convert non-Bluetooth audio sources into wireless Bluetooth audio. Enjoy seamless music playback and hands-free calling, making your travels more enjoyable. 【Intelligent Noise Reduction Technology】Equipped with CVC noise reduction and DSP signal processing technology, this Bluetooth car adapter delivers clearer calls with extended transmission range. Supports MP3, WAV, WMA, FLAC, and APE audio formats for high-quality music playback. 【Built-in High-Performance Amplifier】The integrated amplifier enhances audio performance and delivers rich, durable sound quality, faithfully reproducing the original music. Up and down control buttons are conveniently located on the side of the device for easy music navigation while driving. 【Hands-Free Calling and Navigation】Built-in microphone and control buttons allow you to answer, redial, end, and reject calls without touching your phone. The adapter also supports voice guidance from navigation apps, so you can keep your eyes on the road and drive safely. Note: Measurements are manually taken; please allow a 1–3 cm variation. Color may vary slightly due to lighting and screen differences. Actual product may differ slightly from images.