Littmann Lightweight II S.E. Classic Stethoscope, Caribbean Blue 1 - Tube 28 Inch Tube Double-Sided Chestpiece, 3M, 2452 - Sold by: Pack of One; Manufacturer Name: 3M; Manufacturer Number: 2452; Brand: 3M Littmann Lightweight II S.E.; Color: Caribbean Blue; Latex Free Indicator: Not Made with Natural Rubber Latex; User: Adult; SOLD BY: Sold by: Pack of One. Blue, 28 Inch tube Reliable and clear acoustic response and light weight combine to make this an ideal entry-level instrument Tunable diaphragm responds with a simple pressure change to capture low and high-frequency sounds Tear-drop shape for easy fit under blood pressure cuff Soft-sealing eartips provide an excellent acoustic seal and comfortable fit