A wearable band for your baby, a smart charger and a mobile app work together to not only monitor more effectively but learn and predict your baby's sleep habits and optimal sleep conditions. With a band that sits around your baby's ankle, you just know more. The band is equipped with a smart sensor that senses heart rate, skin temperature, motion and position. It communicates with the app on your phone and lets you know if your baby is sleeping soundly or if something is wrong. For safety, the smart sensor is encapsulated in medical-grade silicone, fully-sealed. It's cleverly shaped to not be a choking hazard.The wearable band is soft and breathable. Of course, it's washable. And three sizes of the band come included so that Sproutling can grow with your baby. Charging just got a lot easier. No more cumbersome wires. Just toss it in and you're all set.