?Warranty & Risk-Free Attempt?The compressed air duster will be backed by our 180-Day No-Quibble Money Back Guarantee policy and 24-month Replacement Warranty, and support 7*24h technology service. ?Warm Tips? In order to prevent accidental touch of the power on/off button, resulting in battery drain during transportation, We has upgraded the button to an anti-mistouch switch, you need to long press the button for 3s to turn on/off, and short press the button again to enter the high speed. This helps reduce unnecessary battery drain. It will shows green light when fully charged, but after 4 hours later the red light and green light will flash alternately. ?Mini Sized & Easy to Carry?The electronic air duster measures 4.2x2.7x7.2 inches and weighs approximately 0.7 pounds. So the computer cleaner can be placed in the included storage bag for easy on-the-go carry. The slender nozzle is suitable for cleaning corners or places beyond the reach of hands like computer cases, the brush nozzle is suitable for rugged surface dusting like electronic keyboards. ?Save-Money & Eco-Friendly?Compared with compressed air blower cans, our portable air blower for computer does not produce chemicals, liquids or residues during the cleaning process. Our keyboard air blower protects your electronics from liquids. We have improved the product battery so that this air compressor allows more than 8000 uses, which can save you a lot of money, In the long run, It can save you money and protect the environment. ?Fast Charging & Long Battery Runtime? The air duster compressed air is equipped with a 10W fast charging port, which can be fully charged in 2-3 hours. And the electric duster for pc can run for about 4 hours (low speed), which is twice as long as the same type of blower. Cost-effective than constantly purchg canned air. ?2-Gear to 45000RPM Electric Air Duster?Our compressed air duster adopts a new generation Brushless-Motor and upgrades max power to about 85W. The blowing force can reach 2.25OZ. Stronger than 95% of cordless air duster on the market. The electric air duster is also designed with 2 gear speed wind (45000RPM & 30000PRM) suitable for dusting off keyboards, computers, electronics, laptops, car interiors, sofa, cameras, air conditioners, fans, etc, Deep cleaning makes the dust nowhere to stay.