Review title is This Is Poorly Designed [SEP] While this Aoraem collector can pick up some small particles, the suction it produces isn’t that great, so it leaves a lot behind. If you add the small hose attachment, then its suction power lessens even further. It was doing a halfway decent job at cleaning my keyboard, but the attachment kept falling off. The little bristles aren’t really helping anything and they are very harsh on my large mouse pad, which is what I mostly use these for. My old collector has a small lever you push to turn it on. The Aoraem requires you to turn the entire top half of the unit to power it. That’s fine for turning it on, but when you try to turn it off, it can loosen the bottom tray and the particles spill out if you’re not careful. It is easier to replace the batteries on this model versus my other one, but that’s the only thing I like about it.