Product Description: 1. This bluetooth car adapter adopts dual microphones, which greatly picks up sounds from all directions while driving, thanks to excellent sound reception and noise suppression (CVC) technology, which effectively reduces road and wind noise. Hands-free car kits make your driving smarter and safer. 2. The FM transmitter Bluetooth 5.3 with DSP technology can provide 2 times more stable transmission speed without distorting Hi-Fi stereo music. 3. The car FM transmitter comes with 2 USB ports, you can charge two devices at the same time. Compatible with the latest iphones, ipads, cell phones, tablets and more. 4. The FM Transmitter Bluetooth Car Adapter supports 7 colors of LED backlight, which will provide you with a visually stunning color display, which is a great way to match the colors already in your car. You can play music on your car stereo via Bluetooth, USB disk (≤32GB). 5. When plugged into the cigarette lighter, the FM transmitter will display the voltage of the car. Keep abreast of the health status of the car battery to avoid problems when driving. Specification: Product Name: Car FM Bluetooth Player Product color: black Shell material: ABS Product size: 1.9*1.7*2.7inch Power supply mode: car cigarette lighter type Bluetooth version: Version 5.3 Bluetooth sound processing: with DSP technology and A2DP (Advance Audio Distribution Profile) function Bluetooth transmission distance: <10M Bluetooth microphone effective distance: 0.5~2M FM transmission frequency: 87.5~108Mhz Transmitting FM mode: Stereo digital PLL frequency locking Signal-to-noise ratio: >60dB Rated working voltage: 12V-24V Limit working voltage: 10~26V USB1: 5V=3.1A USB2: 5V=1A PD output: 30W PPS: 3.3-5.9V-3.0A 3.3-11.0V-2.25A Supported playback formats: MP3 / WMA / WAV / FLAC Working temperature: 0~50℃ packing list: 1X Car FM 1X instruction manual Notice: Please allow 1-2mm size error due to manual measurement Does not support TF card, no TF card slot