The NeoTech Plus 1017MUSB is a versatile, workhorse headset for general-purpose classroom usage. The 1017MUSB 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 and its noise-reducing, unidirectional boom microphone captures a student’s verbal response - not their neighbors - making it ideal for language learning, library uses and in computer labs. Compatible with Chromebooks, laptops and desktop PCs & Macs, it provides the versatility you need for BYOD and school-issued device requirements in the classroom. Speaker 40mm Mylar Magnet Cobalt Impedance 32 ohm ± 15% Frequency Response 20 ~ 20K Hz Sound Pressure Level 100 db ± 3 db at 1 kHz R/L Output Difference 3 dB Distortion 5% Volume Control Inline volume control Cord 6’ braided straight cord with PVC jacket Plug USB 2.0 Microphone Electret condenser Directivity Unidirectional Impedance Frequency 2.2K Ω (At 1K Hz) Range 10Hz ~ 10K Hz Sensitivity Std -38dB, min -40dB, max -36dB Operating Voltage Std 1V, max 10V Headband Adjustable, PVC Leather Pad Earpads PVC + sponge, replaceable (EP-1017) Earcups Noise-reducting, ABS plastic for durability Color Black Matte finished - headband, earcup Package Resealable storage bag