3M™ Littmann® Select is a dependable, lightweight, clear acoustics, robust design Stethoscope for providing excellent sound at an affordable price. Sound frequency based on pressure can be adjusted with tunable diaphragm. 3M™ Littmann® has patent of snap Tight Soft-Sealing Eartips. The headset has been designed anatomically for providing sound basic assessment of patients at a reasonable price. By applying light or firm pressure to the chestpiece, low and high frequency sounds can be heard conveniently by 3M’s ‘tunable technology’ in a single sided chestpiece. It has a performance rating of 6 on a scale of 1-10, thus strong performance can be expected. The Stethoscope has an automatic designed head which can be fitted easily and comfortably in the ears and at the same time gives superior sound transmission. Another important feature of this product is durability. 3M™ Littmann® Snap-Tight Soft Seal Ear tips has a brilliant acoustic seal with a comfortable fittings.