3M Littmann 6154 Cardiology IV Stethoscope, Standard Finish Chestpiece, Navy Blue Tube

Outstanding 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