Connects via car cigarette lighter and has adjustable arm for convenienceOne More Power Socket for DVR， Car Charger， GPS ect. (Note: Don not support cigar lighter function)Dual USB charging ports (max. output 5V/4.2 A)Full frequency FM transmitter with digital displayBuilt-in intelligent microphone for excellent sound qualityBluetooth hands-free phone functions including answer， end call， reject， redial & moreUtilises DSP technology， full duplex， CVC noise and echo suppressionAlso supports playing music via BluetoothAutomatic power off with memory functionBluetooth: Version 2.1FM Transmission Frequency: 87.5MHz-108MHzFM Mode: Stereo digital PLL frequency lockingProfiles: Supports A2DP (Bluetooth music streaming)Frequency Response: 20Hz-15KHzDegree of Distortion: <0.1%Signal to Noise Ratio: >60dBUSB Output: 5V/4.2AOperating Temperature: 0 - 50 DegreeVoltage (Operation): 12VDimensions: (L) 10.6cm x (W) 5.1cm x (H) 3.1cmWeight: 60gPackage Included:1x Bluetooth Car Kit Charger FM Transmitter1x User Manual