Description: This kind of car MP3 player is designed with dual USB ports, you can charge for 2 devices at once when driving, making your for journey more convenient and easier. This car audio adapter is designed with bluetooth-compatible V5.0, which works stably and easily,giving you a better listening experience. Also, this car MP3 player helps you to answer calls easily, saving time and strength for you when driving, also, you can connect the navigation way easily, making sure your driving security. This bluetooth-compatible car MP3 player is designed with small size that is convenient for you to use and store, will not make trouble for you. Made of plastic material, this kind of audio adapter is durable, you can use it for a long time without being broken or damaged. Specification: Material: ABS. Color: show as pictures. Size: 4.2*4.6*8.5CM. Rated working voltage: 12V-24V. Dual USB output: 5V/3.1A. bluetooth-compatible version: V5.0. bluetooth-compatible transferring distance: within 10m. bluetooth-compatible speaker effect distance: 0.5-2m. Transferring frequency: 87.5-108.0MHZ. Note: Please allow slight deviation for the measurement data. Due to the light and screen difference, the item's color may be slightly different from the pictures. Package included: 1x car bluetooth-compatible player. 1x English introduction.