The Littmann Master Classic II stethoscope provides "excellent acoustics". Patented tunable diaphragm conveniently alternates between high & low frequency sounds without the need to turn over the chestpiece. Includes Snap tight soft-sealing eartips with FREE extra eartips. Acoustical rating of 8 out of 10. Weighs:5 1/2 oz. THREE YEAR WARRANTY. Total length of stethoscope: 27".