Littmann is the name of the stethoscope that is world-renowned for its precision, acoustic excellence, innovative design and outstanding performance. They are regulated Class I (acoustic stethoscopes) and Class IIa (electronic stethoscopes) medical devices bearing the CE mark (acoustic stethoscopes) and CE2797 mark (electronic stethoscopes) by 3M Deutschland GmbH, Germany. These medical devices are intended for use by healthcare professionals and medical students authorized to carry out diagnostics.