Feature - Fit with most kind of 12-24V vehicle, universal and easy to use, just need to plug it in. - This product has the integrated functions of FM transmitter, car mount MP3,USB charger and audio output,etc. - Moreover, as long as your mobile phone is equipped with , you can transfer the music from your mobile phone to your car stereo. - Large screen display show you more useful information of your car. Let you know your car and smart device more well. - Calls can be switched to the hands-free state. At the end of the call, the music will be automatically switched to play. - USB output voltage, which can charge 2 devices at the same time. - T-flash and U-disk supported, let you use it more freely and easily. Support max 32GB storage or U disk, large storage capacity means it can storage more. - Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand Specification - Color: Black. - Material: ABS - Size: 8 x 4 x 7cm. - Rated working voltage: 12V-24V - working voltage: 9-32V - USB1 output: 5V/2.4A - Support music format: MP3/WAV - Support U disk capacity: 1G-32G - Support TF capacity: 1G-32G - version: Version4.2+EDR - transmission distance: less than 10M - microphone effective distance: 0.5-2M - FM transmission frequency: 87.5-108.0MHZ