Bluetooth Transmitter Cloele Wireless In-Car FM Transmitter Radio Adapter Car Kit With Dual USB Car Charger TF Card Slot (FM 1) Broad Compatibility - Wirelessly Bluetooth fm transmitter 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); USB Charging Station - Equipped with dual USB port (5V/2.4A 5V/1A), charge 2 USB devices simultaneously total up to 3.4A; Special Design - Compact gadget with special knob design. High contrast digital screen display for higher visibility; Stereo Solution - QPAU Bluetooth fm transmitter with built-in microphone, you can enjoy audio streaming music and hands-free phone calls on the road; Easy to Use - Simply plug into cigarette lighter socket.