The rechargeable battery provides long-term continuous use, just charge via USB socket using a power bank, laptop or any USB charger (Type-C). There is an indicator light on the main body of the wireless airbrush to show the charging status. This portable airbrush allows you to unleash your artistic skills anytime, anywhere. Note: Please be sure to use a 5V/1A or 5V/2A adapter to avoid damaging the battery. Equipped with a 0.3mm fluid nozzle, our airbrush kit ensures high precision and detailed work. This sophisticated nozzle comes with different pressure settings, allowing you to work on intricate without wasting too much . Effortlessly unleash your creativity as you combine your ideas with impeccable detail and accuracy. We know every project requires a different fluid capacity, which is why our airbrush painting kits come in three different cup sizes - 7CC, 20CC and 40CC. [ Use] After it is fully , put the liquid into the container assembly, then start the switch and continuously