The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.
Audeze LCD2 Classic: 106mm
16. Can be used wirelessly
Wireless devices allow users more freedom of movement.
22% have it
17. 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.
40% have it
18. control panel placed on a device
There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.
17% have it
19. travel bag is included
The device comes with its own special case or pouch, which is useful for safe transportation.
64% have it
20. has a straight plug
A straight plug is better when the jack is on the top or bottom of your player.
49% have it
21. has an L-shaped plug
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.
30% have it
22. number of microphones
More microphones result in better sound quality and enable the device to filter out background noise.
Parrot Zik Sport: 8
23. has a battery level indicator
An indicator shows you when the device has low battery.
13% have it
24. has a 3.5mm male connector
A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.