3M LITTMANN® 27" ELECTRONIC STETHOSCOPE MODEL 4100WS

•Amplification up to 18 times greater than the best non-electronic stethoscopes
•3 frequency modes: bell, diaphragm and extended range
•Recording, storage and playback on six distinct tracks of eight seconds, each without any PC connection
•Instant playback of recordings at normal and half speed
•Permits infrared transmission of digital recordings to another Model 4000 or 4100, PC or Pocket PC
•Twenty hours of continuous use from just two AAA alkaline batteries
•Two-year warranty