KNOW YOUR BABY'S SLEEP: The Baby Sleep Monitor tracks your baby's heart rate, average oxygen level, and movement overnight which could be a good helper in monitoring your baby's sleep. PEACE OF MIND: View the heart rate, average oxygen level, and movement on Base Station and the app, and keep an eye on your baby's sleep. COMFORTABLE BANDS ON BABY'S FOOT: The uniquely-designed nylon foot bands can be easily worn on the baby's foot, gentle and non-irritating. REVIEW AND SHARE RECORDS AT PDF/CSV: Sleeping summary available on an app (iOS/Android) without any charges, to know the detail of your baby's sleeping condition with more, share the records any time. BUILT-IN MEMORY: It works as a stand-alone monitor, storing up to 4 sessions of data, which will sync to your mobile after paired with the app. You don't have to worry about losing data even though your phone is not connected to the device.  * It's not a medical device. The product is not intended for use as a medical device or to replace medical devices * Please make sure the mobile is close to the monitor to provide a reliable connection for the updating reading and data sync( less than 10 meters/30 ft, identical to the connection range between the base station and the sleep monitor )