【Healthlier and Saving than Air Cans】 Most aerosol duster contains a refrigerant/propellant that cannot be considered “air”. As a matter of fact, inhaling too many of these vapors can lead to negative health effects. Our air duster just blow the air. This unit is equal to over 5,000 cans of traditional duster. It will pay for itself in just a few months. | 【USB Charging Port】 With a USB charging port, air duster is rechargeable just like your cell phone and will provide you with hundreds of hours of cleaning time when one charged. | 【High Power】 The portable compressed air is by far our strongest unit ever! The cordless air duster produces an incredible blast of air at over 33000RPM and runs for over 30min straight. It blows away all prior units! | 【Safe For Use In “Clean Rooms”】 With no chemicals it's Eco-Friendly - computer vacuum just uses the air we breathe. Won’t harm or damage solid state electronic components and integrated circuits like conventional “duster sprays”. | 【Lightweight,Durable】 And weighs only 405g. No matter how long you use it, you will not feel tired. Removable nozzle makes the product easier to store and carry.