A new class of clarityThe 3M™ Littmann® CORE Digital Stethoscope features the outstanding acoustics, comfort and quality of a Littmann cardiology-grade stethoscope enhanced by powerful digital technology. Features like up to 40x amplification1 and active noise cancellation can help you auscultate with greater confidence. The 3M Littmann CORE Stethoscope connects with Eko software on a smart device2 to visualize, record and share data.