A versatile, workhorse headphone for general-purpose classroom usage with mobile devises. Delivers performance at a cost-effective price for 1:1 learning, assessment testing and more. Its audio playback is calibrated to enhance the tonal range of the human voice in language learning, library uses and in computer labs. Compatible with tablets, smartphones, chromebooks, laptop and desktop PC's and Macs, it provides the versatility you need for BYOD and school-issued device requirements in the classroom. Features include: Padded headband comfortable enough for extended wear. Fully adjustable ABS head strap to fit all sizes. Noise-reducing earcups lower external noise so volume can be set at levels recommended for hearing safety. Highly durable CaliTuff™ cord made of braided, PVC jacketed Material with reinforced earcup entry point resists chewing, cutting and separation. The 3.5 mm stereo plug works with computers, tablets and smartphones. Inline volume control ideal for easy access. Rugged ABS plastic earcups resist breakage in high-use situations, replaceable leatherette ear cushions.