ADC Adscope 600 Platinum Series Cardiology Stethoscope with Tunable AFD Technology, 27 inch Length, Black Adjustable frequency design (AFD) enhances acoustic performance. Sculpted chestpiece is CNC machined to exacting tolerances from surgical stainless steel. High-performance cardiology headset features large-bore stainless steel binaurals and Adsoft Plus silicone eartips for the ultimate in wearing comfort and acoustic seal. Includes two additional pairs of Adsoft Plus eartips and a complimentary scope ID tag. Lifetime warranty and free consumables, including diaphragms and eartips, when registered.