Classic Stethoscope Littmann® Master Classic II™ Hunter Green 1-Tube 27 Inch Tube Single Sided Chestpiece – Tunable Diaphragm – Caring Med
Amazon.com: ADC Adscope 604 Premium Pediatric Clinician Stethoscope with Tunable AFD Technology, Lifetime Warranty, Black : Industrial & Scientific
Cardiology Stethoscope Tunable Diaphragm Professional Single Head | eBay
3M Littmann Master Cardiology Stethoscope, Black Tube with Standard Finish, 27"
Revival Lubb-Dupp Stainless Steel Single Head Stethoscope,for Doctors, Nurses, EMT, Medical Students,Tunable Diaphragm for Medical and Non-Critical Care – with Latex Free tubing - Walmart.com