Weighing just 4.9 oz. [139 g], the ADC Adscope-Lite 612 combines the acoustic response of a traditional bell and diaphragm in a convenient, oversized, one-sided chestpiece. The compact, sculpted design features the adjustable frequency (AFD) technology, allowing you to tune the diaphragm to enhance both high- and low-frequency response. The clinician headset, designed to withstand thousands of cycles, features a double-leaf tensioning spring and a reinforcing yoke molded into flexible 22-inch [56 cm] PVC tubing.