Tunable diaphragm responds with a simple pressure change to capture low and high-frequency sounds. Reliable and clear acoustic response and light weight combine to make this an ideal entry-level instrument. Anatomically designed headset is angled to meet the path of the ear canal. Durable, latex-free design, variety of tube colors and chestpiece finishes and the length of tube is 28 inch. 2 year manufacturer’s warranty from the date of purchase.