100% Brand new and high quality!
This module has short circuit protection
DIY Mobile Power Supply, 5V output for charging Phone, MP3, MP4, PSP, etc

Input voltage: 6V-40V 
Output voltage: 5V
Output current: 3A
Switching frequency: 150KHZ
Conversion efficiency: 92%
Working temperature: -40 to +85 degree Centigrade
Color: Red
Size: 59mm x 21mm x 17mm

Package includes:
1x Step down module

DC 6V-40V To 5V 3A Double USB Charge DC-DC Step-down Converter Module

SKU: 162347744327