The pediatric stethoscope features a 1inch bell for an easier chestwall seal. The 3M™ Littmann® Classic II Pediatric stethoscopes are designed for long-lasting durability. These precision instruments are also designed to maximize the comfort of both patient and professional.Benefits:The solid stainless steel chestpieces on the 3M™ Littmann® Classic II Pediatric stethoscopes, are optimally sized for your little patients. The small diaphragm conforms to the contours of pediatric bodies.