The NeoTech 1025MT is an attractively-priced, mainstream, mid-weight headset for general-purpose classroom usage with mobile devices. The 1025MT 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 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 tablets, smartphones, Chromebooks, laptop 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 25 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 3.5mm, nickel-plated, stereo, 4-conductor (TRRS) Microphone Electret condenser Directivity Unidirectional Impedance 2.2K Ω (At 1K Hz) Frequency Range 10Hz ~ 10K Hz Sensitivity Std -45dB, min -48dB, max -42dB Operating Voltage Std 1V, max 10V Headband Adjustable, P.P. + leather headband pad Earcups Noise-reducing, ABS plastic for durability Earpads PU + sponge Package Resealable storage bag