The MDF Deluxe Infant and Neonatal Stethoscope is specifically designed for auscultation of infants and newborns. It delivers accurate auscultation of heart, lung, and Korotkoff sounds with acoustic integrity and clarity. An ergonomic design ensures comfort for the doctor and patient, even during extended use. Precisely handcrafted, the Deluxe Infant and Neonatal Stethoscope is the standard in auditory diagnostics with unmatched performance and durability. Chestpiece: The handcrafted lightweight infant and neonatal dual-head chestpiece, fitted with a unique raised ultra-thin fiber diaphragm and full-rotation acoustic valve stem, is constructed of quality chrome-plated brass. The deep, cone-shaped infant bell, crowned with a non-chill bell ring, provides greater sound amplification, isolation of low frequencies, and patient comfort. Acoustic Tubing: Constructed of thicker, denser, latex-free PVC, the Y-configuration non-stick acoustic tubing provides insulation for superior sound transmission and seals out ambient noise while preventing the cracking and wearing that can occur from repeated use. The longer-than-average length allows a comfortable space between health professional and patient. Acoustic Pyramid Chamber: An internal metal-alloy chamber located in the acoustic tubing below the spring keeps the tubing channel open for maximum sound transmission into the binaural. ErgonoMax Headset: Hand polished, pre-angled chrome-plated brass binaural features a patented internal dual-leaf spring construction for durability and custom fit. Soft ComfortSeal eartips are clear for hygienic purposes and conform to the ear to seal out extraneous noise while ensuring comfort during extended use. Force-fit, non-threaded SafetyLock eartip adaptors lead the industry in user safety. Included Accessories: Extra set ComfortSeal eartips, spare ultrasensitive fiber diaphragm, and ID tag. Warranty and Service: Lifetime warranty (5 years on tubing); Free Replacement Parts for Life Program.