In-Line Microphone with Play/Pause Button - Integrated mic supports calling and voice applications; play/pause button works on mobile devices for quick media control. 3.5mm TRRS Plug for Wide Compatibility - Works with Chromebooks, PCs, Macs, tablets, mobile devices, and any audio device supporting TRRS connections. Comfortable In-Ear Design with Silicone Cushions - Soft, lightweight earbuds provide fatigue-free listening for extended use in classrooms and online learning. Nearly 4 ft Tangle-Resistant PVC Cord - Durable 3.75 ft cable withstands daily student use and provides ample mobility at desks, testing stations, or computer labs.