This item is a car charger music player which supports TF and USB music playback, answer or reject calls after the unit is connected with your phone via wireless connection. It feature with two USB ports which will offer you excellent charging experience during driving. Features - Color: Black, Orange - Material: Plastic. - Size: 20.5x7x6.5cm/8x2.7x2.5inch Working voltage: 12V-24V USB-1: 5V / 3A (Max), 9V / 2A, 12V / 1.5A USB-2: 5V / 2.4A Version: 5.0 Effective distance: about 10M Support TF / U disk capacity: le;64GB Voltage detection range: 6-30V Bit rate: 64-320KBPS Harmonic distortion: lt;0.05% FM: lt;0.1%) Signal to noise ratio: 85db (FM: 65db) File support type: MP3 / WMA / APE / FLAC / WAV FM frequency range: 87.5-108MHz (100KHz step) - 1.77 inch TFT color screen to show song title, playing status, easy to read at night. - Support USB drive, TF card, wireless and AUX IN music playback. - Show car battery voltage, safe for car battery. - Over-current, over-temperature, over-voltage, under-voltage, short circuit protection, safe to use. - Handsfree calling function, one key to answer or up calls.