HamiltonBuhl® SchoolMate™ SC-7V deluxe headphones with volume control are the perfect companion to today's ever growing classroom technology -- Apple and Android devices, tablets, computers, MP3 players and more. Each student needs a robust headphone with high quality sound to get the most out of their high tech lessons. The noise-isolating, closed-back design of this unit provides a superior learning environment for students and makes this model an ideal headphone for testing. And now the SC-7V features our unique Dura-Cord™ -- the chew, kink and knot-resistant, PVC-jacketed, braided cord -- specially-designed to be more durable and reliable than ever! Details:Gray5 foot braided nylon Dura-Cord3.5 mm TRS stereo plugCompatible with: iPods / iTouches / MP3 Players, iPhones / Cell Phones, iPads / Tablets / eReaders, Computers (Mac & PC), CD Players / Stereos, TVs, Most Gaming SystemsIncludes heavy duty anti-lice storage bagLeatherette ear cupsOver-ear designVolume Control on ear cupSpeaker drivers: 40mmFrequency response: 50-20,000 HzImpedance: 32OSensitivity: 105dB±4dB