About This Item 4 Air Speeds - The Air Duster utilizes a 150,000 RPM motor. Simply turn on the power and switch between 4 different air speeds at the push of a button. Low energy consumption while maintaining strong airflow. USB Rechargeable Design - The compressed air duster can be used as a replacement for canned air and can be recharged and reused. Built-in 3000mAh battery can run continuously for 30-40 minutes. Environmental protection & Energy SavingG- The air cleaner does not produce chemicals, liquids or ice during the cleaning process. It protects your electronics from liquid damage. This electric air duster is suitable for a variety of scenarios: indoors: cleaning all kinds of electronic devices, under the sofa and any dusty corners - an easy solution to inconvenient cleaning. Outdoors, it can be a mini burner helper for barbecue;; a helper for cleaning the yard - can play its marvelous role to help you blow the snow off your car as well as other places in the winter, and become an indispensable assistant in your life. Our air duster is easy to carry, lightweight and comfortable to hold. The battery is equipped with temperature protection, current protection and short circuit protection to ensure the safety of the device during charging. It is the best choice for home, office and car dust cleaning.