Trusted by Medical Providers Since 1971 | Backed by Our Lifetime Warranty and Free Lifetime Parts Program | Latex FreeMultifunctional lightweight diagnostic instrument that can be set up in clinical settings such as doctors, nurses, students, or at home.CHESTPIECE is designed with a rotatable, fully rotating stem and a true bell and true diaphragm to capture high or low frequency sounds as desired. Handcrafted from high-quality aluminum, it offers the ultimate value in auditory diagnostics, with unmatched performance and durability in its light weight.Patented, Headphones, Tubes and Eartips: Longer, thicker, non-stick tubes and ErgonoMax earphones include patented double leaf spring construction, patented acoustic pyramid chamber and patented SafetyLock eartip adapter to maximize Take advantage of sound performance, durability, comfort and expandability.Includes: 3 pairs of small, regular and large MDF ComfortSeal clear ear tips, an extra diaphragm, ID tag, lifetime warranty and lifetime free parts program registration. Available in over 20 colors, it makes a great gift.