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3M Littmann Diaphragm for Littmann Electronic Model 3100 Stethoscope, Grey : Industrial & Scientific - Amazon.com
Medi-Care Products - 3M™ Littmann® Electronic Stethoscope Model 3200 combines Ambient Noise Reduction technology and frictional noise dampening features with amplification, Bluetooth® technology, and an all-new user interface, for the next level
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