1. Material: ABS 2. Input: DC12-24V 3. Output: USB: DC5V/2.4A USB-C/Type-C: 5V/2.4A 4. Total output: DC5V/4.8A 5. Bluetooth version: 5.1 6. Colorful lights, one key switch. 7. It is firm and stable, and it can be charged continuously after bumps. 8. One-key call, easy to answer and call. 9. MP3 music Bluetooth function, can be inserted into U disk / TF memory card, and can be played without networking.