3M Littmann Cardiology S.T.C. (Soft-Touch Chestpiece) Stethoscope Black Tube 27 inch 4471 <br />http://www.amazon.com/gp/product/B000F4W1PS?tag=sukses2015-20 <br /> <br />3M Littmann Cardiology S.T.C. (Soft-Touch Chestpiece) Stethoscope Black Tube 27 inch 4471 <br />Precision balanced ergonomically designed chestpiece moves easily between various auscultation sites and delivers high acoustic performance <br />Soft-Touch insert provides comfortable secure grip in at least three hand positions with and without gloves <br />Tunable diaphragm responds with a simple pressure change to capture low and high-frequency sounds <br />Two-in-one tube design dual lumen eliminates noise interference from two external tubes rubbing together <br />Anatomically correct and angled headset channels sound into the ear canal
