Feature: USB2.1A charger, Bluetooth version 4.1 Noise cancellation function, built-in noise cancellation circuit, make the call sound clearer Support power and memory function This product adopts FM full-frequency wireless transmission technology and can directly read the audio files in the mobile phone Bluetooth/TF card/U disk. Supports Bluetooth audio playback and Bluetooth hands-free calling. Support intelligent APP function, lossless high-quality audio decoding; usb car charging function in a multifunctional car MP3. Support charge while listening to songs Support Bluetooth/TF card/U disk player, Bluetooth hands-free calling The screen can show the frequency, Precise structural design, piano paint appearance Parameters: Color:Black Material:ABS Power Source: Cigarette Lighter Power Screen: LED screen USB output: 2.1A Memory Card Type: TF Card Interface: High Speed USB2.0 Size: 8*5*3.7cm Launch distance <5 meters Harmonic distortion: <0.05% FM: <0.1%) Signal to noise ratio: 85db (FM: 65db) Operating Current: 50-100mA DC12V Power supply: DC12-24V Support file type: MP3/WMA Bit rate: 64-320kbps Support TF card / U disk capacity: 16GB FM frequency range: 87.5-108MHz Suitable models: DC12V -24V universal Working temperature: 0C-60C Package included: 1 x Car FM Transmitter Player 1 x User Manual