Tracks your baby's heart rate, oxygen level, and sleep trends Get notified if Baby's readings leave preset zones so you know when Baby may need your attention 16-hour battery life

Tracks Baby’s oxygen & heart rate - View readings in real-time with Owlet App. Tells you when Baby needs you - Base Station and Owlet app notify you when readings leave “safe” zones. Fits babies 0 to 18 months -Fabric socks fit 5 lbs. to 30 lbs., for both left and right feet. 16 Hour Battery + Quick Charge - Get 8 hours in 20 min., and a full charge in 90 min. Wireless Charging - Convenient drop-and-go charging on the Base Station.