Multifrequency stethoscope design switches between bell-like low frequency and diaphragm-like high frequency performance simply by altering pressure. Nonchill bell and diaphragm retaining rim for patient comfort. Seven interchangeable animal face snap-ons included: Panda, Frog, Koala, Deer, Monkey, Tiger, and Bear. Weight: 3 oz, length 30". 5-year warranty.