Amazon.com: 3M Littmann Stethoscope, Cardiology IV, Black Tube, Black Chestpiece, 27 Inch, 6163 & Classic III Monitoring Stethoscope, Black Edition Chestpiece, Black Tube, 27 Inch, 5803 : Industrial & Scientific
Amazon.com: 3M Littmann Cardiology IV Diagnostic Stethoscope, Black-Finish Chestpiece, Black Tube, Stem and Headset, 27 inch, 6163 + 40007 Stethoscope Identification Tag, Black : Industrial & Scientific
Littmann Classic III Stethoscope, Copper Chocolate, 5809 - Stethoscope.com
3M Littmann Stethoscope, Cardiology IV, Black Tube, Black Chestpiece, 27 Inch, 6163: Amazon.com: Industrial & Scientific
The 6 Best Littmann Stethoscopes - Comparison Guide | Inside First Aid