our kit features rechargeable batteries, 30% more battery capacity and significantly longer service life than regular models, lab reports, battery life of 72 minutes. Please note: this data is from the laboratory test, and the actual service time is affected by the battery service life and surrounding environmental factors. You can use this air brush kit with air compressor almost anywhere. The rechargeable battery supports charging with USB sockets, such as a power pack, adapter, laptop, and power board. with two different cup sizes from our paint kit: 5cc, 20cc. The kit also includes 2 sets of painting brushes and a dropper for easier artwork creation, 5 cleaning brushes and 5 washing for easy maintenance and trouble-free cleaning. Please add clean water or cleaning detergent to the fluid cup of air brush for nails and it several times. Until the water sprayed from the airbrush is clean. (Tip: To avoid it being blocked, please clean the airbrush cavity, nozzle, and fluid cup in time, preferably not more than 10 minutes) Color: Black Material: Metal Package Contents: 1*set airbrush 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.