Delivers both exceptional sound quality and a simple-to-operate user interface with on-board recording and playback capabilities, Bluetooth® technology to wirelessly transfer sounds to your PC for further analysis, free heart & lung sound visualization software, and available software that identifies suspected heart murmurs with a Class I indication. Proprietary Ambient Noise Reduction Technology (ANR) reduces background noise 85% on average without eliminating critical body sounds. Features Acoustic Seal Eartips that creates a tight acoustic seal from ambient noise entering through eartip connections and Frictional Noise Reduction Technology that helps reduce handling noises compared to previous electronic models. Up to 24X Sound Amplification provides extra listening power for when you need it; helpful when a heart, lung or body sound is especially faint. May be useful for overly obese patients. May be helpful when the patient's clothing restricts listening experience. Includes AA battery and PC connection; 27” long tube. 2-year warranty.