Customer reviews

3.4 out of 5 stars
3.4 out of 5
10 customer ratings
5 star 19% (19%) 19%
4 star 42% (42%) 42%
3 star 9% (9%) 9%
2 star 23% (23%) 23%
1 star 8% (8%) 8%
How does Amazon calculate star ratings?