Highlight Bluetooth 5.0The latest V5.0 Bluetooth car music player provides a faster pairing and more stable connection. Noise Cancellation Support echo cancellation and noise suppression (CVC) technology during calls; advanced noise reduction technology will ensure quality, crystal clear sound. LED DisplayLED digital display working status information such as frequency points, to better visualize phone calls, music. Full FM Frequency RangeSupport FM full frequency point transmission function, a total of 206 frequency points from 87.5MHz ~108MHz. A2DP Stereo BluetoothSupport Bluetooth stereo A2DP music playback. Bluetooth Hands Free Call Support Bluetooth hands-free phone, answer, hang up, reject, call back and other phone functions. Crystal Clear Music StreamingStream music on your car stereo via Bluetooth; Support lossless music format. Dual USB-A Quick ChargeDual USB-A Output DC 5V 3.1A. Safety FunctionCar Battery Voltmeters function to display car battery Voltage; it supports input overvoltage protection, output overcurrent protection, output short circuit protection, and over temperature protection. Specification Bluetooth FM Transmitters Model: T66 Car Cigarette lighter Powered, DC 12V/24V Bluetooth Version: V5.0 Bluetooth Transmission Range: Approx 10 Meters Audio Input: Bluetooth / USB Driver / TF Card Audio Output: Car FM Transmitters FM Frequency: 87.5 ~108MHz FM Transmission Distance approx 5 Meters Music Format: MP3, WMA Dual USB-A DC 5V / 3.1A Material: ABS + PC Package Included 1x Bluetooth FM Transmitters for Cars 1 x User Manual