The compressed air duster provides more powerful wind power, up to 91000 RPM, and provides super strong airflow for deep cleaning. Press for 3 seconds and keep the power on, you can switch three airflow modes (41000 RPM, 61000 RPM, 91000 RPM) for different equipment cleaning so that there is no place for dust to stay. The compressed air has a built-in 6000mAh battery, which can run continuously for 20-30 minutes. Comes with USB-C fast charging cable, fully charged within 3-4 hours (green light is always on: fully charged), can be charged by computer, mobile power supply, car charger, or adapter.