Customer reviews

2.7 out of 5 stars
2.7 out of 5
5 customer ratings
5 star 20% (20%) 20%
4 star 0% (0%) 0%
3 star 44% (44%) 44%
2 star 0% (0%) 0%
1 star 36% (36%) 36%
How does Amazon calculate star ratings?