I have a huge house and I hated unplugging and plugging in the vacuum just to pick up the crumbs every day off my hardwood floors....OMG....this is the coolest thing ever!  I just unplug........vacuum....and 2 minutes later it is back charging on the wall of my laundry room.........I love it!  I even tried it on some carpeted stairs......omg......It weighs nothing.....now it is all I will ever use on my 1 carpeted stairs and 2 hardwood stairs!!