iClever Wireless Bluetooth FM Transmitter Radio Adapter Car Kit with Dual USB Port Remote Controller Bluetooth & TF Card & USB Driver Audio: Wirelessly stream high quality stereo audio via Bluetooth connection to compatible devices, or insert Micro SD card or USB flash driver (both up to 32GB capacity) Ergonomic Design: Compact gadget with special knob design. High contrast digital screen display for higher visibility Multifunctional: With built-in microphone, you can enjoy hands-free phone calls and audio streaming music on the road. Also can charge any 2 USB devices simultaneously Easy to Use: Simply plug into cigarette lighter socket. Control directly as an FM transmitter or via remote control Dual USB Output: Equipped with dual USB port(5V/2.4A 5V/1A), charge your digital devices total up to 3.4A