Weighing just 3.7 oz, the all new ADC Adscope 619 is a durable yet lightweight instrument with the acoustic performance you would expect from a scope costing two or three times more. The combination chestpiece precisely machined from lightweight aluminum, offers both an ultra-sensitive diaphragm for crisper high frequency transmission and an extra-deep bell for unsurpassed low frequency response. Our AFD technology diaphragm further enhances acoustic response, with an extra-large 1.375 inch diameter bell and highly sensitive 1.75 inch diaphragm. The clinician headset, designed to withstand thousands of cycles, features a double-leaf tensioning a spring and a reinforcing yoke molded into 22-inch PVC tubing. Includes both large and small Adsoft Plus eartips and scope ID tag. Individually acoustic tested and inspected in the USA. Lifetime warranty and free parts forever.