Avid Education AE-36-GR Classroom Computer Stereo Headset with Boom Microphone, Single TRRS Plug, Green The AVID Education AE-36 classroom headphones are the perfect headset match for use with devices with a single 3.5mm headphone jack that operates both the speakers and microphone, such as laptops, Chromebooks, iPads, tablets, etc. Permanent leatherette earpads will stay on the headphone even after multiple uses and are easy to wipe down and clean With a 6-foot braided nylon cord that ensures extra resistance against chewing, this is the perfect headset for schools, classrooms, class labs, libraries, and more The headband is padded and adjustable, making it a great choice for all ages and comfortable for extended wear Speaker size: 40mm | Impedance: 32 Ohms | Sensitivity: 115dB | Frequency response: 20-20,000 Hz | Mic sensitivity: -58 dB