The Owlet Smart Sock in Bedtime Blue is the first baby monitor to track your baby?s oxygen level and heart rate - the best indication of your little one's health while they sleep. If your baby?s readings leave preset ?safe? zones, you'll receive a notification that lets you know your baby really needs you. Now you can feel more confidence, more freedom, and more peace of mind knowing that Owlet is here to help you keep your baby safe. Over a million parents around the world trust Owlet every night to help them keep their babies safe while they sleep. Their award-winning Smart Sock goes beyond the capabilities of any other baby monitor to tell you the things that really matter when it really matters. The smart sock is the smartest baby monitor of its kind and uses established pulse-oximetry technology proven both safe and accurate, and secure and encrypted data means only those you choose can stream from the am. 30-day peace of mind Guarantee: Every Owlet Smart Sock comes with a 30-day