Car Bluetooth-compatible 5.0 FM Transmitter Wireless Adapter Mic Audio Receiver Auto MP3 Player 3.1A Dual USB Fast Charger Interface: High-speed USB2.0 Screen: LED screen Power supply: cigarette lighter power supply USB output: 3.1A Memory card type: TF card Support TF card/U disk capacity: 16GB Power supply: DC12-24V Support file type: MP3/WMA Working current: 50-100mA DC12V Bit rate: 64-320kbps FM frequency range: 87.5-108MHz Letter to ratio: 85db (FM: 65db) Harmonic distortion: <0.05% FM: <0.1%) Working temperature: 0C-60C Applicable models: DC12V -24V universal Launch distance <5 meters Material: ABS Features: 1. Precision structure design, USB 3.1A, screen 5.0 version, can display frequency. It supports charging while listening to songs, and it supports power-off memory function. 2. Support /TF card/U disk player, hands-free function. 3. This product adopts FM wireless transmission technology, which can directly read audio files on the mobile phone"'"s /TF card/U. Support audio playback and hands-free calling. 4. Supports smart application functions, regardless of high-quality audio signals; it senses the USB smart charging function in MP3. 5. Gradient function, give gradual change, make speech clearer. Packing list: 1*smart mp3 player