3M Littmann Cardiology IV Black 27 Stethoscope B P Parts Accessories Main performance Color:Yellow Main performance 33 1 2 H x 21 1 4 W x 26 D * 5 cubic feet of spacious capacity with 4 convenient quick freeze shelves complete with trays and cup holders * Includes 12 standard ColPacs which can be recycled every 2 hours * Shipping weight 105 Lbs 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 * Standard Finish Chestpiece Black Tube Stainless Stem and Headset * 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 * Seven year warranty provides greater peace of mind