The lightweight MDF® Dual-Head Stethoscope combines Diaphragm and Bell flexibility with a full rotation Acoustic Valve Stem to provide sensitive acoustics and professional performance at an affordable price. Chestpiece: Lightweight Diaphragm and Bell Chestpiece and full rotation Acoustic Valve Stem are constructed of anodized aluminum and chrome-plated brass, respectively. The Bell side detects low frequency sounds with built-in, non-chill Bell Insert Ring for patient comfort. The Diaphragm side is fitted with an Ultra-Thin Fiber Diaphragm for detecting high frequency sounds. The Dual-Head Chestpiece enables users to auscultate a wide range of cardiovascular and respiratory acoustic frequencies. AccuFit™ Headset: Adjustable headset crafted from chrome-plated brass is equipped with ComfortSeal™ Eartips to provide medical professionals with an anatomic fit for extended usage comfort and superior acoustic transmission. Acoustic Tubing: Single Acoustic Tube in the Y-configuration is constructed of non-cracking, non-sticking high-density latex-free PVC. Accessories: Additional (2) ComfortSeal™ Eartips, (1) ultra-sensitive Diaphragm and (1) ID tag.