Digital amplified stethoscope. 
Title from website:  3M(™) Littmann(R) CORE digital stethoscope. 

 - 1 stethoscope (contains 1 stethoscope, 1 USB-A to USB-B micro cable, 1 case) :  stainless steel and other materials ;  28 x 16 cm. 
<br/><br/> Product features: Connects to Eko software to visualize and share heart sound waveforms -- Up to 40x amplification (at peak frequency, vs. analog mode) -- Active noise cancellation -- Toggle between analog and amplified listening modes -- Soft-sealing ear tips -- Tunable, dual-sided stainless steel chestpiece with open or closed bell -- Designed for use with adult and pediatric patients -- FDA-cleared and HIPAA compliant. - adapted from the publisher's website. 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Library of things, health.<br/>Stethoscopes