Pearl pink  28  * Traditional bell combined with a tunable diaphragm that conveniently alternates between low and high frequency sounds without the need to turn over the chestpiece * Excellent acoustic seal and comfortable fit with patented Littmann Snap Tight soft-sealing eartips * Comfortably angled  anatomically correct headset * Patient-friendly  nonchill rim and diaphragm * Single lumen tubing in a range of colors * 3 year warranty *