Shintaro Lightweight Headphones - Kit of 20The Shintaro Lightweight Headphones Kit of 20 is ideal for classrooms and shared learning environments requiring multiple sets of reliable, student friendly headphones. Each unit features a lightweight build, flexible headband for comfort, and in line volume control, making them ideal for extended student use. With a 2. 5 metre cord and 30mm dynamic type speaker, these headphones deliver quality sound while maintaining compatibility with most