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.
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.
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.
A straight plug is better when the jack is on the top or bottom of your player.