I bought this about a year ago and it's superb. I run it daily and it's great for getting fur out from under furniture as well as the litter that gets tracked. A couple of cautions though:
you must clean the two brushes every few days as hair builds up and will keep the vacuum in high mode which is hard on the battery so it may have to recharge several times. I have a slightly more than 1000 square foot 2 bedroom/2 full bath condo, (mostly hardwood except for carpet in the bedrooms), and it will clean the entire place on one charge as long as it kicks down to the lower mode on the carpet. My only regret is that they came out with a newer model that empties the bin itself!
I do love that I can either set it up to start automatically every day, at different times if you like with a 7 day programmer, but I've read cautionary tales about "Poopageddon" where the poop gets distributed all over the house so I don't often run it when I'm not home to supervise.
https://youtu.be/tZ0bq-jIg-o
I probably should mention that Tiki accepted it immediately and gets excited whenever it starts up. Eli was terrified of it but ignored it after about a week. He goes up on a bed or a cat tree when it starts up and Tiki follows it around the house.