3M Littmann Classic III Stethoscope, Gray Tube, 27 inch, 5621 Specifications Applications Physical Assessment and Diagnosis Binaural Construction Single lumen Chestpiece Finish Machined Stainless Steel Chestpiece Technology Double Sided Chestpiece Weight 2.9 Ounce Chestpiece Weight (metric) 82 g Color Gray Color Group Gray Diaphragm Diameter 1.7 Inch Diaphragm Diameter (metric) 43 cm Diaphragm Material Epoxy/Fiberglass Diaphragm Type Tunable, single-piece Eartip Type Soft Sealing Extra Eartips Yes Headset Material Wide diameter aerospace alloy / Anodized aluminum Length 27 Inch Length (Metric) 69 cm Model Classic IIITM Net Weight 5.3 oz Net Weight (Metric) 150 g Occupation EMT/EMS , Medical Assistant , Nurse , Nursing Student Performance 7 Small Diaphragm Diameter 1.3 Inch Small Diaphragm Diameter (metric) 33 cm Special Adaptors Yes Trademark Littmann Tube Color Gray Warranty Period 5 years