Amazon calculates a product's star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
This thing is amazing! I got it the day after I ordered it and it took less than 2 minutes to put together. My floors are all white tiles so dirt and hair shows up quite easily... this took care of that quickly. I vacuumed my entire apartment in less than 10 minutes and my floors were sparkling. It’s also really slim so storage is easy. Best purchase I’ve made from Amazon!
The vacuum cleaner is great but it’s not clear in the photos or the description that it’s not wireless. You still have a wire that has to be plugged into the wall.. As well it’s quite a short wire and doesn’t even reach everywhere in my small bedroom. I bought it because I thought it could be charged and used without a cable.