Features: brand new and high quality Adjust between 5V-15V , this module comes with high precision. Multi-turn potentiometer, voltage output is Adjustable . The voltage is limited to 4.5-15.5V output, please let the buyer know! Not support other voltages. Output current,The for peak value is greater than 21A [refers to the input current] Continuous stable current is better than 4A [total power is less than 50W] Conversion efficiency,The highest measured 97%, most of which are around 90% efficiency. Output Power,The maximum recommended value is 50W, and the typical value is 12V@4A with load test! Specifications: Module model: KDT3429UP-007 DC-DC non-isolated - boost (high power integrated boost) Input voltage: 2.7V-13V (3.7V lithium battery boost/5V boost, etc.) Output voltage: +5V, +9V, +12V, +15V(optional) [Adjust between 5V-15.5V] Output current: the for peak value is greater than 21A [referring to the input current] Continuous stable current is better than 4A [total power less than 50W] Product size: approx. 35x25mm/1.38x0.98in Package Includes: 1 x MP3429 Boost Module note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!