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.
32% have it
11. 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.
75% have it
12. 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
13. travel bag is included
The device comes with its own special case or pouch, which is useful for safe transportation.