3M Health Care - What's the first thing you should do with your new Littmann ®stethoscope? Right: put it on and try it out. The second thing you should do is register your
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Amazon.com: 3M 6163 Littmann Cardiology IV Black Chestpiece Stethoscope with 27" Black Tube : Industrial & Scientific
![Amazon.com: 3M 6163 Littmann Cardiology IV Black Chestpiece Stethoscope with 27" Black Tube : Industrial & Scientific Amazon.com: 3M 6163 Littmann Cardiology IV Black Chestpiece Stethoscope with 27" Black Tube : Industrial & Scientific](https://m.media-amazon.com/images/I/61L-PM2GONL._AC_UF1000,1000_QL80_.jpg)