Diagnostic use. Lightweight chest piece. All-purpose examination scope. Certified sound for the healthcare professional. Performance: Bell for cardiac auscultation, diaphragm for respiratory auscultation, long-life, single lumen PVC tubing for better sound transmission. Design: Lightweight for comfort and portability, high-luster chrome-plated binaural resists scratching, dynamic tubing colors. Personal safety and comfort: Latex-free tubing protects allergy-sensitive individuals, non-chill ring on bell ensures patient comfort, adjustable spring binaural provides personal fit.