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 kettle started off great. Perfect size for a 1-2 person household. But after using less than a month, the auto shut-off stopped working. So it continuously boils and the handle becomes dangerously hot.