The 3M Littmann lightweight II S.E. stethoscope is lightweight, making it ideal for all-day use. A tunable diaphragm provides time-saving convenience. The headset tension is easily adjustable to provide a comfortable fit. Its resilient 28-inch tubing in black can retain shape quickly. The chest piece has an ovoid shape to enhance performance around body contours. This double-sided stethoscope features a non-chill rim for enhanced comfort. It doesn't contain natural rubber latex, making it safe to use for those with allergies.