Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
The cable is designed to minimize tangling.
The in-ear device is ultracompact and lightweight, with little or no interference with earrings, spectacles, hats, or hairstyles. It is inserted in the ear canal itself and blocks out a lot of environmental noise. It has stronger bass tones and is unlikely to fall out of the ear.
There is a control panel on the cable, so you can easily operate the device without having to interact with it.