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.