An L-shaped plug is better if the jack is on the left or right side of the device, so that the cable isn't bent, and is less likely to break when the device is in your pocket.
31% have it
12. has a straight plug
A straight plug is better when the jack is on the top or bottom of your player.
55% have it
13. has stereo speakers
Devices with stereo speakers deliver sound that surrounds the user from left and right side, creating a richer sound and a better experience.
74% have it
14. has an over-the-ear form
Comfortable full-size form with earcups that fully enclose your ears. This model is loved for its increased sound isolation and the fact that it won't leak sound to your neighbors. It offers potential for maximum bass and loudness levels.
42% have it
15. travel bag is included
The device comes with its own special case or pouch, which is useful for safe transportation.
65% have it
16. sweat resistant
Resistance to sweat makes it ideal for use while doing sports.
10% have it
17. number of microphones
More microphones result in better sound quality and enable the device to filter out background noise.