SchoolMate™ On-Ear Personal Stereo Headphones with In-Line Volume The HamiltonBuhl SchoolMate™ HA2V headphone is constructed rugged for durability yet lightweight for long-term comfort wear, making it perfect for today's tech filled classrooms. With the ever growing classroom technology, each student needs a high quality, durable headphone to get the most out of their high tech lessons and the HA2V stereo headphone with in-line volume control not only provides rugged durability and high quality sound, but the lightweight, on-ear design allows for all-day comfort and easy compact storage.