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3M™ Littmann® CORE Digital Stethoscope, 8490, Black Chestpiece, Tube, Stem and Headset, 27 inch Introducing the New 3M Littmann® CORE Digital Stethoscope. It’s time to listen like never before with the comfort and confidence of a 3M Littmann® CORE Digital Stethoscope. Introducing the most advanced stethoscope yet, with up to 40x amplification (at peak frequency, versus analog mode), active noise cancellation, in-app sound wave visualization and a host of other powerful new features designed to h
