Attention Littmann® Stethoscope Customers. We’ve become aware that counterfeit stethoscopes are being sold using the Littmann® brand via certain websites and other unauthorized outlets.While available at a lower cost than the genuine products, these scopes deliver correspondingly poor performance. To ensure that you are obtaining a genuine Littmann® Stethoscope, purchase your stethoscope only through one of 3M’s authorized distributors. Should you have any questions about the authenticity of any Littmann® Stethoscope, please contact 3M Health Care via this website or at the following number: 1-800-228-3957 The First Aid Zone is an Authorized Littmann stethoscope dealer. You are guaranteed a genuine Littmann brand product with full manufacturers warranty.