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/Aux/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/Aux/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 Interface: High Speed USB2.0 Size: 8*5*3.7cm Launch distance