100% brand new and high quality Features: Input overvoltage, undervoltage protection. Input overcurrent protection. Output overcurrent, short circuit protection. Machine over temperature protection. Support fast charge agreement. BC1.2, for Apple, Samsung- agreement. QC2.0 and 3.0. MTK PE1.1/PE2.0. for Huawei Fast Charge Protocol FCP, does not support mate9 (SCP) Spreadtrum Fast Charge Protocol SFCP. Specifications: Input voltage range: 6V-32V Output voltage: default 5V, automatically adjust between 3-12V after triggering fast charge Output power: maximum 24W (5V /3.4A, 9V /2.5A, 12V /2A, etc.) Output voltage cable compensation function Conversion efficiency: 90%-97% Size: approx. 37x 20x10mm/1.46x0.79x0.39in Application: Solar panel to mobile phone charging Car charging retrofit Driving recorder power supply Houhold power supply transformation Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-3mm error due to manual measurment. Package Includes: 1 x USB DC Step-down Module