Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

Rated operating voltage: 12-24VWorking Voltage limits: 9-26VUSB Output: 5V/2.5AWorking Temp: 0-50°SNR: >60dbDistortion: <0.1%Frequency Response: 20Hz-15KhzLeft and right channel separation: >60dbBT Version: Version 2.1+EDRBluetooth sound processing: A2DP(Advance Audio Distribution Profile)Bluetooth transmission distance: 10MBluetooth microphone effective range: 0.5-2MFM transmission frequency: 87.5-108MhzFM transmitter mode: Stereo digital PLL lockingColor: Black，Silver，Gold，Rose，PinkFunction：Full frequency fm transmitterDigtal displaySupports line audio inputWith power off switch (usb direct connect)Supports U disk TF card playerSupports mp3， WMA format musicBluetooth answer， hang up， reject， redial calls and other functionsBluetooth stereo music playEcho cancellation and noise supports (CVC) technolony a callAutomatic power-off memory function Package Included:1x Bluetooth FM transmitter Car Charger1x Audio Cable1x User Manua