3M Littmann Master Classic II 2144L Stethoscope brings together award-winning ergonomic design and excellent acoustic sensitivity. It delivers reliable performance and comfortable use to professionals dedicated to providing the best patient care. | Uses: Used to detect sounds in the body to check any diseased condition | Salient Features: Single sided chestpiece designed for easier grip and maneuvering Tunable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chestpiece Soft sealing eartips provide an excellent acoustic seal and comfortable fit Headset is easily adjusted for individual fit and comfort. Angled eartubes align with ear canals Tunable diaphragm technology provides clinicians hear different frequency sounds by simply adjusting the pressure on the chestpiece Unlike two sided models, there’s no need to turn over and reposition the chestpiece Snap tight, soft sealing eartips conform to individual ears for an excellent acoustic seal and comfortable fit Eartips snap firmly onto the ends of the eartubes and, for safety, require a significant effort to remove Resilient next generation tubing retains its shape and flexibility even after folding tightly into a pocket Improved resistance to skin oils and alcohol and is less likely to pick up stains Convenient and comfortable to use | Directions For Use: Hold the chestpiece with light pressure to hear low frequency sounds; press a little more to hear higher frequency sounds This time saving feature allows the healthcare provider to focus on the patient, while the non-chill diaphragm and rim provide patient comfort | Safety Information: Read the label carefully before use Keep out of the reach of children