HEINE GAMMA® C3 CARDIO STETHOSCOPE BLACK. Exceptional acoustic performance, particularly in the cardiac frequency range. Combined double chest-piece with two different frequency ranges. Instant selection of a double membrane on one side or a conical acoustic head on the other. High-performance double membrane, 45 mm diameter gives ideal sound transmission and perfect skin contact for exceptional sound reproduction. Two-in-one tube system for enhanced performance. Very supple, yet kink-resistant with exceptional acoustic reproduction. Includes ear olives (large/soft) and one pair of replacements (small/hard) for sound insulation.