This single-lumen stethoscope is comfortable and lightweight. The full-range Professional Stethoscope is for professionals who demand the best in auscultation and comfort. Superior acoustics mean accurate auscultation of heart, lung, and blood pressure sounds. Meets all diagnostic needs, from detecting Korotkoff sounds of blood pressure to analyzing the most subtle heart murmurs. The stainless steel chestpiece intensifies the vast array of body sounds through all tissues. Comfort-sealing eartips depress and conform to the shape of ear canals, ensuring a soft yet airtight fit. Provides adjustable binaurals. Lightweight and flexible PVC tubing for fitting in side pocket or carrying around the neck. Five-year warranty.