Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
2.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.
With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.
Foldable devices are easier to transport and take up less storage space.
The device comes with its own special case or pouch, which is useful for safe transportation.
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.