Features: Car BT MP3 supports hands-free calling, a built-in high-sensitivity microphone, HSP bottom noise, and echo suppression. Knob design, one-key operation to adjust the volume/answer / hang up / call back. Upgraded version 5.0 BT chip, the connection is more stable, and the automatic connection is faster. Smart MP3 player, support mobile phone/network/all kinds of music APP software/map playback. Support TF card and U disk extended playback. Support lossless audio decoding, high resolution, high-performance stereo, support WMA, APE, FLAC, WAV, and other lossless music formats. Dual USB car charger, PD 18W fast charging: 3A/3.6-6.5V, 2A/6.5-9V, 1.5A/9-12V. Fast charging PD 18W charging speed is 4 times faster than ordinary 5V/1A. (Mobile phone needs to support fast charge protocol function) Support LED colorful atmosphere light display, playback breakpoint memory function. Support key operation to switch folder playback. Specifications: Item Type: Car Charger Model: T832 BT Version: 5.0 Material: ABS Color: Black Size: 7.5*5.5*4.5cm Product Weight: 47g Package Size: Approx.10.5*7.5*5cm / 7.9*5.5*1in Package Weight: Approx.68g / 4.6oz Package List: 1 * Car Charger FM Transmitter 1 * User Manual