Hi there. I have no idea how many stars l should give for the stethoscope which l bought. It is better than the first one that l bought because it is not as 'twisted'. I don't know how else to describe the way it sits whet it is placed into my ears in preparation to hear some sounds. At least the one l bought from you sits almost without twisting, but experiencing having the stethoscope poked into my ears has given me a shocking relevation about doctors. If all stethoscopes are as uncomfortable as this one, which is much less uncomfortable than the one I bought before this one, then doctors are basically saints because to put oneself through the agony of having one of those things poked into my ears so that l can help another person who has a problem with their body is a very high price to pay. l had it in my ears for about 3 minutes, and had a headache for many hours afterwards. I bought it as a gift for a dear person and l have had to find something else to give them because l wouldn't wish it on even my worst enemy to have to poke that instrument into their ears. I am sorry to not be able to honestly give a better review. I can say that l did hear the sound of my heart beating, and even the blood pumping through some of my veins. But l couldn't hear my breathing in my lungs. I only dealt with the company via internet, and the item was delivered very quickly.