Littmann stethoscopes are the names of Dr. David Littmann, professor of medicine at Harvard University, who developed a new, lightweight double-frequency stethoscope membrane capable of capturing low-and high-frequency sound at either end. You can hear different frequencies based on the magnitude of the pressure. You can hear lower frequencies with light pressure, and you can hear higher frequencies.
Littman Stethoscopes is part of the parent company 3M, a globally acclaimed science-based technology company. The company delivers professional innovations, engineering, advanced materials, accurate manufacturing—and a high level of consistent quality that is incomparable. Littmann stethoscopes are manufactured in accordance with strict processes and quality controls for tight consistency. The cost of Littmann stethoscope is very economical and will deliver consistent high-level performance.