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 included ear pads
Allows you to change ear pads without buying new ones.
43% have it
13. travel bag is included
The device comes with its own special case or pouch, which is useful for safe transportation.
65% have it
14. has active noise canceling / noise reduction
This type of device allows you to listen at lower volume levels, causing less ear fatigue as you don't have to crank up the volume to overcome background noise. Ideal for plane rides and morning commutes.
This device comfortably rests on top of your outer ears. As it doesn't block out everything from the outside world, it's preferred in places like office environments and recommended for outdoor activities.
22% have it
17. has a removable battery
The battery is removable and can be replaced by the user if broken.
7% have it
18. diaphragm size
The diaphragm moves air back and forth to create sound. The bigger the diaphragm, the more bass it can produce.