Description <br> Features. 1. For all kinds of vehicles. Digital tube display, aluminum alloy knurled bezel design. <br> 2. Dual USB charging ports with a maximum output of 5V/1A + QC3.0 fast charging 18W. Support Apple phone and Apple tablet charging. Support stereo FM mitting technology <br> 3. Support external U disk. Support MP3/WMA music format files. Automatic power-off memory function. Direct car cigarette lighter to take power <br> 4.Bluetooth :ATS5.0. Bluetooth hands-free calling <br> 5.Support Bluetooth stereo music DSP technology. Battery voltage detection. <br> <br> Parameter. <br> Rated working voltage:12V-24V <br> USB output:dual USB output 5V/1A+QC3.0 fast charging working temperature 0-60 degrees <br> Signal to noise ratio: Greater than 60dB <br> Distortion: Less than 0.1 <br> Frequency response:20Hz-15Khz <br> Left and right channel split: Greater than 60dB <br> Bluetooth version:ATS5.0 <br> Bluetooth sound processing function: A2DP (Advance Audio Distribution Profile) <br> Bluetooth mission distance: Less than 10M <br> Bluetooth microphone effective distance:0.5-2M <br> FM mitting frequency:87.5-108.0MHZ <br> Material: Plastic <br> colour: Black <br> <br> Package Contents: <br> 1 x Bluetooth in car <br> <br> Only the above package content, other products are not included. <br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. <br>