The EKO Core stethoscope is amazing! I love being able to auscultate wirelessly, especially with COVID-19 patients. Its very useful in the emergency department because of the noise cancellation and the ability to record heart and lung sounds if need be. The only complaints I have about the stethoscope are the bell and the bottom of the of the EKO digital attachment. The bell/diaphragm seems cheap, so I substituted the bell with my Littman Cardiology III and it works like a charm! The bottom of the EKO digital attachment is not too well secured- it'll come apart and expose the electronics if handled a bit roughly and I even lost the bottom of the digital attachment without knowing. It's a wonderful product, but the construction and attachment of the EKO digital attachment could be better.