Key Function: 1. Short press the button and the digital tube will display the battery level. 2 Double-click to close the output Other function descriptions: USBA output fast charging protocol (supports QC3.0/QC2.0///SCP) (output 5V/3A 9V/2A 12V/1.5A 5V/4.5A 4.5V/5A) Type-C supports PD3.0/PD2.0/QC3.0/QC20///SCP fast charging and input Out, support PD3.0/PD20///fast charge input (output 5V/3A 9V/22A 12V/1.5A5V/4.5A 4.5V/5A), (input 5V/3A 9V/2A 12V/1.5A) micro-type input supports / fast charging input (input 5V/2A9V/2A) Colour:green Material:PCB+components Depending on the batch, the component appearance/color/batch number may be different, which does not affect use. Package Contents: 1 x Fast Charging Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. When discharging, the digital tube is always on to display the battery figure % (when there is fast charge output, the -Pattern mark is always on) When charging, the digital tube displays the power figure %, and the single digit flashes at 1HZ (when there is fast charging input, the -Pattern mark is always on) LED display status:Digital tube display during charging/discharging (charging status)