Get more from the stethoscope you already own. The CORE Digital Attachment can be used on most popular analog models, adding automated murmur detection, amplification, active noise cancellation, and wireless listening to your stethoscope. 9 out of 10 healthcare professionals surveyed* indicated they can hear more clearly and identify sounds faster with the Littmann® CORE Digital Stethoscope than compared with a traditional analog stethoscope. * On-line survey (2021): 2,496 3M™ Littmann® CORE Digital Stethoscope customers were contacted. 320 respondents provided feedback about their experience compared to a traditional analog stethoscope.