ColorBlack Tube, Machined Stainless Steel Chestpiece Brand3M Littmann Exterior FinishStainless Steel MaterialRubber Item Weight0.09 Kilograms Is ElectricNo Dual-sided chestpiece with small 3.3cm diaphragm is ideal for pediatric patients. Versatile chestpiece design provides high acoustic sensitivity with both a floating diaphragm and open bell. Non-chill rim and diaphragm provide patient comfort. Soft-sealing eartips provide an excellent acoustic seal and comfortable fit. Headset is easily adjusted for individual fit and comfort. Angled eartubes align with ear canals.