Littmann Classic III 3M Black Double-Head Stethoscope Purchased about 3 years ago. There may be small scratches from use, but they are not noticeable. The larger diaphragm came off once. It has been used without problems since then, but it might be better to purchase a new diaphragm. They cost around 1300 yen. Therefore, I am selling this at a lower price. There are no problems with hearing sounds.