KEKU Univeral LCD Display Bluetooth Wireless Car MP3 Player FM Transmitter Modulator Radio Adapter Handsfree Car Kit with Hands-Free Calling Music Control Mic Built-in microphone with enhanced voice detection makes hands-free calls easy. Just plug-in, sync your phone, and you're ready to talk. Broadcast the best & clearest quality sound through FM radio station (88.1 ~ 107.9 mHz) and streams your music from your smartphone or bluetooth MP3 devices otal control of your Smart MP3 Flex Groove Stick from the palm of your hand Universal USB port lets you charge your Smartphone or MP3 Player while streaming, so you can power up while you're talking or listening to music. Bluetooth Handsfree, Voice Prompt & Caller ID, CVC sets for Echo & Noise Reduction, On-Board Volume, Play Settings, and Phone Controls. The compact design and flexible neck ensures a good fit in nearly any vehicle.