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.
Thought it was the perfect kettle for 3 or 4 months and then it went all black inside! First noticed the level window and then looked inside at the base, very black! Took it back to Big W who replaced it and as they had nothing else I liked I bought same one again thinking it may have been a one off, but not to be so got thrown out this time😥😥. Buyer beware