3M™ Littmann® Master Cardiology™ Stethoscope, Sold As 1/Each Solventum 2167 27 Inch Tube, Plum Outstanding Acoustics: The Highest In Littmann Mechanical Stethoscopes Tunable Diaphragm: Hear High Or Low Frequency Sounds By Slightly Adjusting Pressure On The Chest Piece Dual-Lumen Tubing: Two Sound Paths In One Tube Eliminates The Rubbing Noise Of Traditional Double Tubes Headset Is Easily Adjusted For Individual Fit And Comfort. Angled Ear Tubes Align With Ear Canals Includes Special Procedures Adaptor For Pediatric Or Neonatal Auscultation Stethoscope, Cardio Plum 27" 3M Cardiology Stethoscope 3M™ Littmann® Master Cardiology™ Purple 1-Tube 27 Inch Tube Single Sided Chestpiece 3M™ Littmann® Master Cardiology™Sku: Mck-520217_Ea Mfgr Sku: 2167520217_EaShips In 14-21 Days