Califone E3USB is a lightweight earbud that is a budget-friendly solution for day-to-day uses, delivering a full-bodied sound that is suitable for testing in the classroom, traveling, or listening to lesson plans. Designed with a 3-1/2-foot straight cord, convenient inline microphone and volume control and a USB plug. Includes one pair of small ear covers and one pair of medium ear covers. The replaceable ear covers are flanged, allowing them to be noise-isolating. Compatible with iOS, Windows and Android-based devices, Chromebooks, iPads, Surfaces, tablets, smartphones, desktop, and laptop computers. Comes in Black. 30 day warranty with school use.