Littmann™ Stethoscope [Master Cardiology] Black 3M 2161 I am selling this because I have other stethoscopes. It has never been used, and I haven't touched the main unit. I only opened the box to list it for sale. The outer box will be packed with cushioning material for shipping. [High-Precision Stethoscope] The 3M Littmann Master Cardiology provides excellent sound quality and can capture subtle changes in heart and lung sounds. It is an essential item for healthcare professionals to improve diagnostic accuracy. [Comfortable Fit] Made with latex-free materials, so there is no need to worry about allergies. The design fits the ears comfortably, even during prolonged use. - Brand: 3M - Model: Littmann Master Cardiology - Model Number: 2161 - Accessories: Instruction manual, warranty - Color: Black - Material: Latex-free Thank you for viewing.