The TRRS School Headsets are equipped with a single 3.5mm TRRS connection. These school headsets are compatible with iPad, Chromebook, Surface and other devices and other including mobile phones and laptops that are equipped with a TRRS jack that controls the mic & headphone. Perfect for learning environments including classrooms, libraries, and computer labs. Connect any of these TRRS School headsets and begin using educational interactive multimedia apps with your students.