A headset is one headphone or pair with a built-in microphone. Headsets can be used for applications which require communication i.e. Skype, games with voice chat, mobile phones etc.
33% have it
12. has a straight plug
A straight plug is better when the jack is on the top or bottom of your player.
54% 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.
73% 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. has a coiled cord
A coiled cord typically offers more flexibility as it can be extended, and taken outside for example.
9% have it
16. number of microphones
More microphones result in better sound quality and enable the device to filter out background noise.