Owlet Cam 2 & Dream Sock Sensor. It comes with 4 Fabric Socks (fitting babies 0-18 months, 5-30 lbs), Base Station, Cam Mounting Kit, and Access to the Dream App with Predictive Sleep Technology & all-new video clips. The Dream Duo combines the Dream Sock and Cam 2 and is the only baby monitor to track heart rate and average oxygen as Sleep Quality Indicators—all while streaming HD video right to your phone. Our Predictive Sleep Technology automatically tracks your baby's sleep & wake windows so you don't have to, and the Dream App will let you know when Baby might be ready for sleep.