Califone EH-3S Explorer Binaural Stereo Headphone, 3.5mm, No Volume Control Explorer Binaural Stereo Earcup Headphones; 3.5mm Plug; No Volume Control; Replaceable 6 feet straight cord Rugged plastic head strap with recessed wiring for safety; Steel-reinforced dual head straps are fully adjustable to comfortably fit younger students and adults Noise reducing earcups decrease external ambient noise; Slotted baffles protecting the inner speakers; Easy to clean ear cushions Light gray and beige Color; Plastic and Vynil body Material; Response Bandwidth 20 to 17,000 Hz; Sensitivity 111 dB; Impedance 65 Ohms; Mylar Diaphragm; Unit weight 9 ounces, Shipping weight 2 pounds