Customer reviews

3.1 out of 5 stars
3.1 out of 5
3 customer ratings
5 star 37% (37%) 37%
4 star 0% (0%) 0%
3 star 0% (0%) 0%
2 star 63% (63%) 63%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?