3M Littmann Cardiology IV Diagnostic Stethoscope, Standard-Finish Chestpiece, Black Tube, Stainless Stem and Headset, 69 cm, 6152

Acoustics with better audibility of high-frequency sounds (adult side, firm pressure). Tunable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chestpiece. Dual-lumen tubing: Two sound paths in one tube eliminates the rubbing noise of traditional double tubes. Next-generation tubing lasts longer and resists stains. Not made with natural rubber latex or phthalate plasticizers. Headset is easily adjusted for individual fit and comfort. Angled eartubes align with ear canals. Ergonomic and high profile construction; 40 Percent larger chestpiece and 60 Percent deeper bell than the 3M Littmann Classic III Stethoscope