Features:Stand with adjustable smart phone、 GPS and MP3 Player holder.DSP technology、 full duplex、 noise and echo suppression.Rotating head allows angle adjustments、 horizontal or vertical device orientation.Digital tube display. Support FM Transmitter: 87.5-108.0 MHz、 Frequencies.Hands free: Supports smart phone hands-free talking.Voice prompt function. 3.5mm Aux-in plug with micro phone.Car charger with standard USB charging port、 output 5V/1A.Broadcast your music while charging phone or iPod MP3 Player.Specification:Bluetooth version: 2.1The frequency of Bluetooth working: 2.4GHzThe connecting distance of phones and the device:0-15MAnswer/end/reject/hands-freePlay MP3、WMA format files from USB diskPower off memoryInfrared remote controlAutomatically connect after power onBuilt-in speaker 2W outputMic effective range:0-50cmFM transmitting frequency: 87.5-108.0 MHzVoltage: DC12V-24VUSB output: 5V/1ASupport cell phone range: 58-105 mm widthThe environment temperature for operating:-10-70 The environment temperature for storage: -20-80