Is it time for you to move up to the stethoscope that most doctors use? Now is good time to look over the 3M stethoscope. This is not a simple stethoscope, since it has a variety of features. Do you want the best information about your patient�s heart beat? The 3M littmann cardiology iii stethoscope comes in a variety of colors and composed of stainless steel. Go now to our website and look over the videos and testimonials.