ITEM NAME:Dual USB Output 9V/12V/24V/36V to 5VDC-DC Car Charger 3A Step-down Module #gib Product Description Description: Dual USB Output 9V/12V/24V/36V to 5VDC-DC Car Charger Charging 3A Step-down Regulator Power Supply Module Specification: 1. Input: 6V-40V 2. Output: 5V/3A (Max) 3. Efficiency: 92% (Max) 4. Switch frequency: 150KHZ 5. Operating temperature:-40 °C-85 °C 6. Load capacity: maximum output 3A (can work with 2 mobile phones at the same time) 7. Application: USB 5V power supply equipment, such as for mobile power supply, mobile phone and tablet 8. Product size: 70*20*17mm/2.76*0.79*0.67'' Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3mm measuring deviation due to manual measurement. Included: 1 x 3A Step-down Module.Output: 5V/3A (Max). Input: 6V-40V. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. If item is defective after 3 months, you can still send it back to us.