3m Littman Pediatric Black Stethoscope Emergency Phone Pager Systems 5 (minimum) * Inside Tub MSHQ 1885 5 (minimum) * Inside Tub Width (at Top): 23 (minimum) * Tub Wall Height (inside): 13 17 Specially designed Sliding Rings Lock The Seat At Each End Of The Sliding Rails Black 28 * One inch traditional pediatric bell combined with a floating diaphragm * Sold stainless steel 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 attractive colors * 3 year warranty * NOTE: Classic II Infant Stethoscopes also available upon request