Review on Keyboard Upgraded Portable Keyboard Electric by Mike Kimball

Got this and honestly didn't expect it to be worth it. Completely fooled me. Not only is the vacuum suitable for easily removing dirt from mechanical keyboards, but it is also ideal for removing dust and cleaning the motherboard, graphics card and associated circuit boards in the installation. The crevice tool and the included brush are good and the brush is a perfect choice for circuit boards. Charging is easy, if a bit confusing at first. Basically, as stated in the answers, it doesn't work when charging. To be honest I should have figured it out, but I didn't realize it at the time because I was in a hurry to use this gem. Finally, turning it off and on requires pressing and holding a button instead of just pressing it. One has to conclude that this is the perfect tool for what it was designed for: easy cleaning of keyboards and electronics.