Habor Wireless In-Car Bluetooth FM Transmitter Radio Adapter Car Kit and USB Car Charger for iPhone and other Smart Phones [Hans-free Calling]: With this wireless device, you can conveniently answer/hang off/reject/redial calls through hands-free function. [Large LCD Display]: 1.44 inches screen is allowed to clearly display voltage of car battery,incoming phone numbers and name of songs.(songs via Bluetooth will not display) [Crystal sound quality]: Noise and wind will be suppressed by CVC technology to create full duplex sound quality. With 3.5mm audio port, it supports AUX input/output. [Voice Prompt& Memory Function]: When pairing or Bluetooth is connected, voice prompt will tell users whether this device is connected successfully or not. It will automatically connect to its memorized paired Bluetooth devices when power on. [Fast Charging]: With 5V/2.1A charging port, gives you fast and effective charging experience.