A tunable diaphragm allows the user to conveniently alternate between the low- and high-frequency sounds without turning over the chestpiece * Portable convenience of single-sided chestpiece * High-performance single-lumen tubing for excellent acoustic performance in a range of attractive colors * Excellent acoustic seal and comfortable fit with patented 3M Littmann© Snap Tight Soft-Sealing Eartips * Comfortably angled anatomically correct headset * Used as a diagnostic aid as part of the physical assessment of a patient * 32 inch (81.3cm) * Single-sided chestpiece * Navy Blue tube * # Patient-friendly nonchill rim and diaphragm. # Three-year warranty