Keep track of your child?s vitals for longer with the new Owlet Smart Sock Plus. This generation features the widest size range, which provides fitting for various babies and older children (5-55 lbs, birth to approx 5 years). The superbly designed device tracks heart rate, oxygen levels, sleep and also gentle movements of your baby. All collected data are live-streamed to your smartphone via a free Owlet app, available for Android and iOs devices. The Owlet Smart Sock is made of BPA free, Latex-free materials and is completely safe for your baby and not limits their lively movements. The Smart Sock Plus set includes a smart sensor and 6 fabric socks for both left and right feet in two sizes, which perfectly fit your growing baby. The power supplied base station analyses your baby's data and provides light and push sound notifications from the base. It glows in green when everything is fine but it will notify you straight away if heart rate or oxygen levels leave the preset zone. The S