3M Littmann 3100 Electronic Series Adult Stethoscope, Black

3M Littmann 3100 Electronic Series Adult Stethoscope, Black

3M Littmann 3100 Electronic Series Adult Stethoscope, Black: Proprietary Ambient Noise Reduction (ANR) technology reduces on average 85 percent of unwanted background noise Up to 24x sound amplification Power on/off, bell/diaphragm/extended range frequency, and (+) and (-) buttons to adjust sound level up or down LCD interface advises you of current sound level, and if you are in bell, diaphragm, or extended range frequency mode 3M Littmann patented soft-sealing ear tips in 2 sizes Stethoscope stays in battery-saving "sleep mode" until you start your next auscultation Operates on a single AA battery Littmann Model #3100BK 27" length Latex free