3M Littmann Electronic Stethoscope Model 4100WS with Ambient Noise Reduction, 27 inch, Black tube

3M Littmann 4100WS Electronic Stethoscope, Black. Features Amplification and ambient noise reduction (ANR) Technology that acoustically cancels an average of 75% of distracting room noise. Up to 18X the amplification of non-electronic Littmann stethoscope. Offers recording, storage and playback capabilites at normal and half-speed. Advanced sound analysis software provides a visual to what is being via phonocardiogram on IBM compatible PCs or Pocket PC. Transmit digital recordings via infared to other Littmann 4100, 4000 PC compatible or hand held device. Three frequency response modes to choose from for optimal heart and lung ausculation: Bell, Diaphragm, and Extended Range. Includes a built-in LCD display on the chestpiece for easy viewing of the heart rate. Able to digitally record and store sound on six distinct tracks. Includes anatomically correct headset and two AAA alkaline batteries for 20 hours of continuous use. Chest piece is sized for adult or pediatric patients and features a nonchill rim. 3M Li

27 inch (69cm), Electronic Stethoscope Model 4100WS with Ambient Noise Reduction and 3M&#153 Sound Analysis Software, Version 2.0 for Heart Sounds, Black tube