Description: Features: brand new and high quality Basic parameters: The output voltage can be set to 5V/8V/9V/12V, the default is 12V. Input voltage range: 2.5V-5VOUT. The input voltage must be lower than the set output voltage. Output capability: When inputiing 3.7V lithium battery, it can output 5V1A, 8V0.5A, 9V0.45A, 12V0.3A. When inputting at 5V, it can output 8V0.7A, 9V0.7A, 12V0.5A. When the default 12V output, the LED indicator consumes about 1mA. If the indicator is turned off, the input current is 1mA at no load. Voltage setting description: The front side of the PCB can be seen with the words A and B. Use the soldering iron to change the pad pass next to the charater. The output voltage can be cahnged by breaking. In the following table, 0 indicates that the pad is disconnected, and 1 indicates that the pad is connected. The pad next to the LED indicator can also be turned off to turn off the indicator. A B VOUT 0 0 5V 0 1 8V 1 0 9V 1 1 12V Specification: Color: As pictures shown. Size: app. 22x11mm(0.87x0.43in) Material: Electronic component Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch With retail package. Please allow 1-3cm 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! Package includes: 1 x Boost Module(other accessories demo in the picture is not included.)