3M Littmann Classic II Infant Stethoscope is specially designed for use on infants and delivers high acoustic sensitivity, through its dual sided chest piece, for both high and low frequency sounds. | Uses: To identify, listen to, and study heart, lung, and other body sounds for physical assessment and diagnosis in infant patients | Salient Features: Dual sided chestpiece with small 2.7cm diaphragm is ideal for pediatric patients Versatile chest piece design provides high acoustic sensitivity with both a floating diaphragm and open bell Non-chill rim and diaphragm provide patient comfort Soft sealing ear tips provide an excellent acoustic seal and comfortable fit Headset is easily adjusted for individual fit and comfort. Angled ear tubes align with ear canals | Directions For Use: Read the user manual/ instruction leaflet carefully