eufy Smart Sock S320 Monitor What Matters Most from Anywhere:Have peace of mind knowing your baby's vitals are always being monitored and always available on your smartphone. AFull Pictureof Your Baby's Wellness:Track more than just regular sleep patterns, including naps, heart rate, and blood oxygen levels. Get daily sleep reports based on customizable sleep tracking sensitivity. Know When You're Needed:Get instant notifications when your baby's vitals change or the sock detaches. Customize the alerts you want to see for a personalized parenting experience. Optimized forAccurateData and Reporting:Get customized tracking and reports on your baby's sleep patterns with optimized algorithms and a Fresnel lens. See key data like heart rate and blood oxygen levels over the past 48 hours Comfortable and Easy to Wear for 0–18 Months:Smart Sock is dirt-resistant, flexible, soft, and washable, coming in 3 sizes so it grows with your baby.