The Littmann Cardiology iii Stethoscope is considered one of the best models produced among medical professionals. One reason for buy this because it is hand assembled and the design and materials used are the very best available. In the long run this makes for great sound quality, especially in the low-frequency ranges, which is what is very important for physicians in their daily duties.Visit our site http://www.whichstethoscope.com for more information on Littmann Cardiology iii