Customer reviews

2.1 out of 5 stars
2.1 out of 5
5 customer ratings
5 star 28% (28%) 28%
4 star 0% (0%) 0%
3 star 0% (0%) 0%
2 star 0% (0%) 0%
1 star 72% (72%) 72%
How does Amazon calculate star ratings?