Bluetooth FM Transmitter with LED Display Screen, Car Wireless Bluetooth Receiver, Dual USB Charging Port with Car Adapter, Music Control, Hands-free Calling Car charging: Support emergency charging for digital equipment.(e.g. smart phones, tablets, ipad, power bank); Dual USB Chargeing Port, you can charge two digital equipments at the same time Support AUX audio input (3.5mm jack): It can read MP3/WMA data through USB socket by connecting your phone, flash disk or a TF card reader to the socket Bluetooth data transmission. You can answer/hang up/reject/redial without touching your mobile phone and play music. With built-in microphone, you can make hands-free calling when you are driving Music Control and LED display screen: Volume up /downCH+/CH- controleasy and convenient to operate Support FM transmitter. Adjustable-angle and general type for vehicles make the FM transmitter more flexible