1. Input: DC12-24V. 2. Output: total output: 5V/3.4A, USB output:DC5V/2.4A, wire output:DC5V/2.4A. 3. Material: Flame retardant ABS+PC, tough and wear-resistant, the positive/negative elastic piece electroplated, and the decorative ring also electroplated. 4. One-piece spring charging cable easy to be stretched to 1.2m, with Lighting-connector/Micro USB connector cable for choice. 5. Maximum USB output: 3.4A, with IC for intelligent identification. 6. Overcurrent and overvoltage protections for the circuit. 7. Size: 6.0*3.0 (cm) (L*W*H), Weight: 37g.