MDF740BO Size: Adult, Color: All Black Pictured in Royal Blue Features: -Stethoscope.-Timing apparatus enables medical professionals to maintain eye contact with patients during diagnosis.-Made of lightweight anodized aluminum and fitted with a unique raised ultra-thin fiber diaphragm for greater amplification and transmission of heart and lung sounds.-Longer-than-average length allows a comfortable space between health professional and patient.-Patented internal metal-alloy chamber located in the acoustic tubing below the spring keeps the tubing channel open for maximum sound transmission into the binaural.-Clear for hygienic purposes and conform to the ear to seal out extraneous noise while ensuring comfort during extended use.-Ear tip adaptors lead the industry in user safety. Includes: -Included accessories: 2 extra sets comfort Seal Ear tips, spare ultrasensitive fiber diaphragm, and ID tag. Options: -Available in several colors.-Available in pediatric and adult sizes. Construction: -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.-Hand polished, pre-angled chrome-plated brass binaural features a patented internal dual-leaf spring construction for durability and custom fit. Dimensions: -Dimensions: 2.13-2.2” H x 6.42-6.5” W x 12.91” D.