Customer reviews

2.6 out of 5 stars
2.6 out of 5
3 customer ratings
5 star 40% (40%) 40%
4 star 0% (0%) 0%
3 star 0% (0%) 0%
2 star 0% (0%) 0%
1 star 60% (60%) 60%
How does Amazon calculate star ratings?