3M Littmann Master Cardiology Stethoscope, Black Tube with Standard Finish, 27"
Amazon.com: eSteth Cardiology Stethoscope - Professional Tool for Cardio Diagnostic - Ultra Sensitive Single Head Chest Piece, Broad Headset - Extra Ear Tips & Non-Chill Ring - 30" Tubing, Black Stethoscope :
Prestige Clinical Cardiology® Stethoscope | Medic Response Health & Safety