:This compressed air duster is simple and convenient, Turn the stepless knob on the bottom of the unit counterclockwise with the arrow to turn it on. Stepless knob adjustment, more suitable for your needs. The electric air duster has a circuit protection design. It is recommended to wait for the temperature to drop before charging after use, which is convenient for the next use. -- Please contact us if you have any questions about the product's usage. : We designed 7 different nozzles for this tiny air duster. Get started by twisting and tightening the long nozzle or universal nozzle and then turning the knob switch on the bottom to use it. The long nozzle is suitable for most scenes, and you can also choose the universal nozzle to combine the other five different nozzles to meet more professional needs. Not only can it remove dust, but it can also be used as a pet hair dryer or a blower tool when grilling, etc. : The air dust collector has a variety of nozzles and a brush nozzle, which is suitable for dust off or vacuuming cleaning in various scenarios, such as computer, fan, lily window, keyboard, car, household cleaning and more. The nozzle of this electric air duster can be replaced, by matching different nozzles, making it easier to clean corners or places that cannot be reached by hand, and more convenient. : This PC duster features a powerful blushless motor that spins up to 150,000 RPM, designed to help you easily clean even the tiniest dust particles. Allows you to easily keep your computer and keyboard clean, bid farewell to the trouble of not easy to clean dust, and welcome a simple and effective solution! This air duster uses less energy and lasts longer while maintaining great performance, making it a great alternative to a compressed air can and keyboard cleaner. : The energy-saving rechargeable air duster comes with a USB-C charging cable (the green light stays on when fully charged). An excellent alternative to compressed air cans, this air duster can be used multiple times and is energy-efficient and environmentally friendly. Compressed Air Dust Cleaner is compact, lightweight, comfortable to hold, and perfect for cleaning homes, offices, cars, and grilling/barbecues.