3M Littmann Lightweight II S.E. Stethoscope, Black Tube, 28 inch 2450, 1 Ct The general-purpose 3M™ Littmann® Stethoscope offers consistent acoustic performance, making it ideal for adult blood-pressure readings and other physical assessments. It has a lightweight construction that makes it comfortable to wear all day long. The 3M™ Littmann® lightweight II S.E. stethoscope features a tunable diaphragm that allows you to alternate between different sound frequencies for convenience. Pull or squeeze the ear tubes to adjust the headset tension for comfort and to fit your head size. This black Littmann® stethoscope has a non-chill rim that prevents direct contact between the head and skin to enhance patient comfort. The 28-inch tubing is resilient and flexible, which allows it to keep its shape, letting you fit it in a small pocket. This acoustic stethoscope has an ovoid-shaped chest piece that ensures it provides clear acoustics around contours and blood-pressure cuffs. Adult