Combination diaphragm/bell adult chestpiece precisely machined to exacting tolerances from surgical stainless steel for outstanding performance and rugged durability. ADC’s AFD Technology provides enhanced acoustic response. Light pressure for bell-type low frequency, firm pressure for diaphragm-type high frequency. Extra large bell (1 3/8" diameter) for unsurpassed low frequency response. Ultra-sensitive diaphragm (1 3/4" diameter) for greater amplification and crisper high frequency response. Non-chill bell and diaphragm retaining rims for patient comfort. Clinician headset boasts reinforcing yoke molded into the flexible 22" PVC tubing and stainless steel binaurals fixed at 15º angle for greater comfort (Tactical model with aluminum binaurals). Adsoft™ Plus silicon eartips with new snap-on connection for the ultimate in wearing comfort and acoustic seal. Includes accessory kit with 2 pairs of spare eartips. Overall length 31". Assembled, inspected and packaged in the USA.