Structure: Compact, portable. The lower pressure level is 20PSI, which is for people who use airbrush makeup. The higher 27 PSI is designed for use in airbrush painting areas: model painting, cake decorating, nail art, crafts, temporary tattoos, etc. The spray uses a lithium battery, which can be used for 90 minutes after being fully charged for 40 minutes.This dual spray has a white switch, when you press the trigger and switch, it will start working and the air will be sprayed out. If you return to the trigger, the liquid will spray out and you can control the liquid freely. When you stop pressing the trigger, it stops working. There is an indicator light on the air compressor to show the battery capacity. Please fully charge the machine before using the spray.The airbrush set has a wide range of applications, including art painting, cake decorating, nail art, handicrafts, models, temporary tattoos, hobbies and more. With the multifunctional airbrush set and adjustable pressure device, you can get different decorations and paintings.Material: MetalColour:Package Contents:1 x liquid extraction dropper5 x spray cleaners5 x cleaning needles2 x capacity cups1 x USB charging cable