Large LED Display. Wirelessly Connect to Your BT Enabled Devices & Stream Music & Phone Calls to Your Car FM Stereo System. Dual USB/One Micro SD and AUX Inputs Allow You to Connect an Ipod, Iphone, Smartphone, MP3 Player and Any Other External Wired Device. Built-in Microphone Allows Hands-Free Functionality. Switches to Hands-Free Mode Automatically When Receiving Calls. Built-in FM Transmitter Range: 87.5-108mhz. Previous Track, Next Track, Volume Adjust, Frequency Selection, Play and Pause Buttons. Powered by Cigarette Lighter in the Car: 12-24V. USB Output to Charge External Devices (5V/2.4A + QC 3.0). QC 3.0 USB Supports QC 3.0 Protocol, DC 3.5 - 6.5 V / 3A 6.5- 9V/2A, 9-12V/1.5A. Flexible Neck Can Be Bended and Adapted for Better Viewing. Remote Control.