Littmann Model 3000 29,3M™ Littmann® Electronic Stethoscope Model 3100 - Carnegie Sargent's Pharmacy & Health Center,3M™ Littmann® CORE Digital Stethoscope,3M Littmann Cardiology IV Diagnostic Stethoscope, 6151, More Than 2X as Loud* Weighs Less** Stainless Steel Chestpiece, 22,Eko 3M Littmann Digital Stethoscope with CORE Attachment