Specifications:Supports bluetooth handsfree、 built in microphone、 safe and convenient to answer the call、 call when the noise processing of CVC、 wind noise supression.Supports A2DP function of mobile phone via Bluetooth directly high-quailty mobile phone music.(Bluetooth stereo)The power supply after opening、 automatic back to even、 automatic into the matching condition.Supports USB、 TF card、 support MP3/WMA/WAV music to format.Integrated car charger of output 5V - 1000mA、 is available for charging handgeld devices in car.Technology Parameter:    Type: FM TransmitterInput Voltage: 12 - 24VOutput Voltage: 5V +/- 0.25Output Current: 1000mA (Max)Bluetooth:Bluetooth Version: V3.0 + EDRFrequency: 20h - 20KHZSensitivity: -42db +/ 3 db 360Voltage: 5V +/- 0.5Working Current: 45mA (Max)Stand-by Current: 25mA (Max)Frequency: 2.402 - 2.480ghzEffective Range: 5metersSensitivity: -92dBmRF Output: 4dBmFrequencies:FM: 87.5MHZ - 108.0MHZTransmitted Power: 87dBuv / 107dBuvEffective Range: 2metersNote: Due to the light and screen setting difference、 the item's color may be slightly different from the pictures.Package Includes:1 x FM Transmitter1 x English Chinese User Manual