Compressed air duster - Eco-Friendly & Energy-Efficient:Alternative to canned air Compressed Air can be recharged and used repeatedly. It is more energy-efficient and environmentally than constantly buying canned air, save money, cordless air dusters electric is a onetime investment, you can have a permanent air duster electric.(This product does not include batteries) Keyboard cleaner - Powerful deep cleaning:Cleans debris and dust from any electronic device, handy in your home or office or car.(This product does not include batteries) Compressed air - Multi-use to lots of places:Electric air blower can cleaning computer keyboard, laptop, camera, cleaning car, seat and blinds etc.Thin and long nozzle makes it easier to clean corners or place where hand cannot reach Air duster - USB charging design:Compressed air dusters battery protection design, Do not charge when the machine just finished using, the battery temperature is too high, please wait ten minutes to cool down for charging