The small bell-like chestpiece is used for auscultation of slight and low frequency sound. Resilient tubing retains its shape and flexibility even after folding tightly into a pocket. It provides longer stethoscope life, and is less likely to pick up stains. Made with natural rubber latex. Applicable for auscultation of heart and lung. Aluminium alloy chestpiece, good sound conduction. Tunable diaphragm responds with a simple pressure change to capture low and high-frequency sounds. Two-in-one tube design (dual lumen) eliminates noise interference from two external tubes rubbing together. Anatomically designed headset is angled to meet the path of the ear canal. 25" L