The Smart Sock comfortably wraps around your baby's foot to track heart rate, oxygen levels and sleep using clinically-proven pulse oximetry. The base station glows green to let you know everything is okay but notifies with lights and sounds if heart rate or oxygen levels leave . The Certified Refurbished Smart Sock 2 has passed a 13-point inspection and includes a new fabric sock set. Experience all the benefits of the Smart Sock 2 and save 00 while supplies last! Track your infant's heart rate and oxygen while they sleep and be notified if something is . KNOW YOUR BABY IS OKAY: Track your baby's heart rate and oxygen levels while they sleep using clinically-proven pulse oximetry, and be notified if . Cotton Fabric Sock; Know your baby is okay: Owlet Smart Sock baby monitor measures your baby's heart rate and oxygen levels and notifies parents in real-time . Product Description. The Better Baby Monitor. Get the peace of mind the Owlet Smart Sock 2 system provides. The Smart Sock 2 uses proven technology (pulse . Smart Sock 2 empowers you with pulse oximetry technology that is used in hospitals around the world. Using this proven technology, Owlet tracks your child's . Find product information, ratings and reviews for Owlet Smart Sock 2 Baby Monitor online on Target.com. Owlet Owlet Smart Sock 2 The Smart Sock 2 uses pulse oximetry to track your infant's heart rate and oxygen levels while they sleep. This information is . Because of that, Owlet has created a baby heart rate and oxygen monitor to help give parents . Visit us today and learn more about the Owlet smart sock. . 2. Educating parents on safe, healthy sleep practices and other ways to improve their .