The HamiltonBuhl SchoolMate SC-7V deluxe headphone with volume control is 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 6' Dura-Cord - the chew, kink and knot-resistant, PVC-jacketed, braided cord - specially-designed to be more durable and reliable than ever!Connectivity Technology: WiredCable Length: 6 ftSound Mode: StereoImpedance: 32 OhmMinimum Frequency Response: 20 HzMaximum Frequency Response: 20 kHzFeatures: RobustFeatures: Noise IsolationFeatures: Tangle-free CableFeatures: Chew ResistantEarpiece Design: Over-the-headEarpiece Type: BinauralDriver Size: 1.57Host Interface: Mini-phoneForm Factor: CircumauralWeight (Approximate): 12 ozPackage Contents: SchoolMate Deluxe Stereo Headphone with 3.5mm and Volume Storage Bag Limited Warranty: 1 YearPackage Contents SchoolMate Deluxe Stereo Headphone with 3.5mm and Volume Storage Bag "