First-of-its-kind FDA-cleared Dream Sock® provides caregivers with a deeper understanding of their infant’s safety and well-being through real-time health readings and timely notifications when their baby needs their attention. Wonderful safety item for newborn. It tracks Baby’s pulse rate, oxygen, wakings, and sleep trends in real-time via the Owlet Dream App. Includes: -One Dream Sock Sensor -Four Fabric Socks - Fits babies 0-18 months, 5-30 lbs -Wireless Charging Base Station -Access to the Owlet Dream App New in Box and still wrapped in plastic! Bought and didn't end up using with our baby. From a pet friendly, smoke free home. Please feel free to ask questions and thank you!