The Learner LNR66 Series is one of the most popular full sized school headsets in K-12 Education. It's legacy design has been a staple in K-12 computer and language labs for decades. They have been widely accepted and approved for various state testing initiatives. It is currently regarded by many educators as highest quality, lowest priced headset of its kind. The Learner LNR66 heasdset has a 3.5mm dual plug for computers and other devices that have separate jacks for audio and microphone inputs. Its drivers provide clear sound reproduction and it's microphone is designed for clarity even in noisy testing environments.