ADC Adscope 608 Convertible Clinician Stethoscope with Tunable AFD Technology, Adult Diaphragm and Adult Bell or Pediatric Diaphragm, 31 inch Length, Metallic Gray Convertible combination chestpiece is CNC machined to exacting tolerances from surgical stainless steel, providing adult diaphragm/bell or adult/pediatric diaphragm configurations. ADCs AFD technology provides enhanced acoustic response: light pressure for low, bell-type frequency, firm pressure for high, diaphragm-type frequency. Clinician headset features reinforcing yoke molded into flexible 22-inch PVC tubing, 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.