Stethoscope Littmann Cardiology III Black 22 Inch Dual Head 3127- 1 Ea1.3 Inch Bell Size Bianaural Stethoscope with Soft Sealing Ear TipsVersatile Adult and Pediatric-Sided scope with outstanding acousticsTwo tunable diaphragmsSolid stainless steel chestpieceDual-lumen binaurals eliminate tube rubbing noise