Bluetooth Hands free Car Kit FM Transmitter Radio Adapter, FM Modulator Car Music MP3 USB Player Audio for iPhone 7 8 X 6S Samsung Galaxy S8+ S7 Note 8 6, Pixel 2 XL Android Smartphone, iPad Pro Build in Mic, Hands free talking & A2DP Music Playing: Support Bluetooth hands-free phone calling via its built-in microphone. Support A2DP function. Music will be played directly while the mobile phone is connected. Dual USB Charger with Quick Charger 3.0: Built-in dual USB Charger output, 3.1A USB port support smart charging, it is available for charging most kinds of devices in car. Car Battery Voltage Display: LCD display of frequency and voltage. English voice number prompt. Frequency: 87.6-107.9MHZ: With a support of FM channels, this car MP3 wireless FM transmitter lets you take a break from your regular music. Easy to USE: Plug the MP3 player into cigarette lighter of your car directly, easy to use and carry.