Prim care Sprague style stethoscope is designed to detect the entire range of heart and chest auscultation. Featuring a proprietary valve mechanism that eliminates acoustic leakage, a threaded, chrome plated, zinc chest piece drum that permits the use of five interchangeable chest piece fittings, adjustable chrome plated brass binaural and a heavy walled double tubing configuration that blocks out extraneous sounds. Packed in a deluxe for color gift box.