Littmann Select The affordable general examination stethoscope with our patented single-sided tunable chestpiece design. The 3M™ Littmann™ Select Stethoscope provides good response in both high-frequency and low-frequency ranges. Its reliable and clear acoustics offer an advantage to health care professionals when listening to heart, lung and blood pressure sounds. The durable chestpiece assures long-lasting performance and is protected with a scratch-resistant, satin finish. Benefits The patented tunable diaphragm allows you to listen selectively to low or high frequencies without having to turn over the chestpiece. For your comfort and control, the chestpiece is finger-contoured for a secure hold. For the patient's comfort — a nonchill rim. The eartubes are set at the proper anatomical angle so they don't need readjusting. The patented 3M™ Littmann™ Snap-tight Soft-sealing Eartips remain secure, yet may be easily removed for cleaning or replacement. A patented double-leaf binaural spring inside the tubing (unlike Sprague-Rappaport-type scopes), maintains proper headset tension. You may adjust the headset tension simply by flexing the yoke. The single-lumen tubing makes the 3M™ Littmann™ Select Stethoscope very portable and less bulky than many double tube stethoscopes. Backed by a two-year warranty. Product Specifications Length Tubing Color 28 in. (71.1 cm) Black 28 in. (71.1 cm) Caribbean Blue 28 in. (71.1 cm) Burgundy 28 in. (71.1 cm) Purple 28 in. (71.1 cm) Raspberry 28 in. (71.1 cm) Royal Blue 28 in. (71.1 cm) Ceil Blue 28 in. (71.1 cm) Seafoam Green 28 in. (71.1 cm) Lilac Actual colors may vary.