I have used this every day for over 2 months. It has been as durable and clear as my $250 3M Cardiology III. Looks much better. Ear pieces were not screwed on tightly enough, and fell off in the hospital. I was able to find and remedy the problem with some elbow grease. QC is understandably lower... I have used this every day for over 2 months. It has been as durable and clear as my $250 3M Cardiology III. Looks much better. Ear pieces were not screwed on tightly enough, and fell off in the hospital. I was able to find and remedy the problem with some elbow grease. QC is understandably lower than at 3M, but finding dust under the diaphragm upon opening the box for the first time was disappointing. I would buy this again, and use it professionally for patient care in a G8 country. Not a bad idea for the professional health care provider to have one of these on hand when your expensive stethoscope goes missing or meets an untimely demise. Read more