[UPDATE] I keep most of my previous comments. But since you've used it a few times, that's not all. Caution: DO NOT turn on the device while connected to the supplied charger or USB charging cable. There appears to be NO current limit protection, so turn on hits the charge port at full motor load. When I did this by mistake, the charging cable, which was obviously not designed for such a current, got hot. And fast. It can also damage the included charger, so don't run it on the charger when the battery is dead. It no longer switches to low speed on the second use. I'm not sure why anyone would want to run it at reduced performance unless they're concerned it might suck keys out of your computer's keyboard. Sorry, not even on a good day. Generally heavy for its size. The suitcase opening button is very easy to press, causing the contents to squirt out. Also, the filter is too dense to catch even small amounts of things like baby powder and will clog in no time. I was a little surprised by its small size for its weight, although it's quite durable. I bought it to collect light spots and remove dust and dirt from hard to reach places, which it does. Suction power is adequate but don't expect it to work as a wired laptop, I haven't used it for liquids yet. It's fairly easy to clean, however, and the filter is made of polymer rather than paper, so it holds up well to cleaning with hot, soapy water. The hose that comes with it only has one end that fits into the adapter so no brush or ripping tool can be used making it pretty much useless. Bottom line, it works "well", but has to be around ten euros cheaper to have any appreciable value.