Customer reviews

3.3 out of 5 stars
3.3 out of 5
3 customer ratings
5 star 33% (33%) 33%
4 star 34% (34%) 34%
3 star 0% (0%) 0%
2 star 0% (0%) 0%
1 star 33% (33%) 33%
How does Amazon calculate star ratings?