Introducing the Owlet Smart Sock Plus ? the ultimate solution for monitoring your child's vital signs for extended periods. With its widest size range yet, accommodating babies and older children from 5 to 55 lbs (birth to approximately 5 years), this innovative device ensures a perfect fit for your growing little one. The Smart Sock Plus goes beyond traditional monitors by tracking not only heart rate and oxygen levels but also sleep patterns and gentle movements, providing comprehensive insights into your child's well-being. All data collected are seamlessly streamed to your smartphone via the free Owlet app, available for both Android and iOS devices. Crafted from BPA-free, latex-free materials, the Smart Sock Plus prioritizes your child's safety and comfort, allowing them to move freely without restriction. The set includes a smart sensor and six fabric socks for both left and right feet in two sizes, ensuring a snug fit at every stage of your baby's development. The base station serves as a power-supplied hub for analyzing your baby's data, providing light and sound notifications to alert you of any deviations from preset zones. With its fast wireless charging capability, the base station fully recharges the sock unit in just 90 minutes or 8 hours in a mere 20 minutes, ensuring uninterrupted monitoring. Experience the next generation of baby monitoring with the Owlet Smart Sock Plus ? providing peace of mind for parents and a safer, more comfortable environment for your little one. FEATURES: Suitable from birth up to approx. 5 years old (5-55 lbs) Includes 6 fabric socks for both left and right feet, sensor, magnetic base station and wires BPA-free, Latex-free, wireless ETL listed design Tracks heart rate, oxygen levels, hours slept, sleep quality and more Base station with lights and push sound notifications Convenient drop-and-go sock charging on the Base Station Quick charging - full charge(16h) in 90 min / 8 hours in 20 min Wide Bluetooth range (up to 100ft