Features: *Double USB3.4A fast charging battery voltage detection *Support Bluetooth music/TF card/U disk playback, support Bluetooth hands-free calling *LED screen can display frequency point, song number and working status information *Support folder switching playback function, song classification playback *Support power-off memory function *2 mobile phones charge at the same time, support charging while listening to music *Noise canceling function, built-in noise canceling circuit, make the call sound clearer Product parameters: Interface: High Speed USB2.0 Screen: LED screen Power mode: cigarette lighter power supply USB output: 3.4A Memory card type: TF card Support TF card/U disk capacity: 32GB Power supply: DC12-24V Supported file types: MP3/WMA/WAV/FLAC/APE Working current: 50-100mA DC12V Bit rate: 64-320kbps FM frequency range: 87.5-108MHz Signal-to-noise ratio: 85db (FM: 65db) Harmonic Distortion: <0.05% FM: <0.1%) Working temperature: 0-60 Suitable models: DC12V-24V-40V universal Launch distance <5 meters Weight: about 30 grams Size: 43*36*75MM