Smart and fast charging: 12-24V input; Output 2 USB ports: smart 2.4 A charging port which can intelligently identify Android or iPhone devices and QC3.0 fast charging port Special design: big key for easy operation; Large 1.7 inch backlit LCD screen Song name/ incoming phone number and car charge level display when car start; Can swivel the LCD screen in a 270 degree gooseneck for optimal viewing comfort; Turn off FM transmitter: long press the next song key for 5 seconds, it will turn off FM and Bluetooth functions to continue charging Wide Compatibility: This radio adapter works with Bluetooth-enabled devices, such as such as iPhones, iPads, iPods, tablets, smartphones or MP3 players. You can transfer music to these devices via 3.5mm audio cable. Support TF/Micro SD card in FAT format up to 32G; Support A2DP; Support MP3/ WMA format; Also supports AUX output and input Clear sound and high call quality: Advanced interference and noise cancellation technology: CVC technology creates full-duplex sound and suppresses noise. noise and wind; Built-in microphone function supports hands-free talking to reduce interference Bluetooth v4.2 and EDR features: Compared to earlier or older versions such as Bluetooth V2.0, V 2.1 or V3.0 , Bluetooth V4.2 consumes much less power and lasts much longer; EDR (Enhanced Data Rate), which ensures a faster data transmission rate and a much more stable connection between a Bluetooth device and the audio receiver