Three purpose attachment kit: Air duster lightweight makes it convenient carrying to clean keyboard, computer, laptop, office desk, small space, crumbs, scraps, etc. You can attach attachments to different interfaces according to your needs. 2-in-1 Battery Operated Air Duster & Vacuum Cleaner: It's not only a powerful cordless vacuum cleaner, but also a cleaner blower. One side of the clener is to absorb dust and the other side to blow away dust, which gives you efficiently cleaning experience. Long Lasting Battey: Upgraded portable handheld mini electric duster build-in two 2000 mAh batteries can be fully charged for 3-4 hours (USB charging port design). 35W brushless motor could last up to 50 minutes.