Superior acoustical performance
Features up to fourteen fimes the amplification of conventional Littmann stethoscopes
Three frequency response modes to choose from for optimal heart and lung auscultation
Ergonomically-designed chest piece is sized for adult or pediatric patients
Volume control dial, mode selector button and non chill rim.
Includes soft-sealing ear tips, anatomically correct headset, one AAA alkaline battery for 40 hours of continuous use.