Owlet Smart Sock, great condition! Comes with original box, pamphlet, 3 size socks, base, adapter/charger, etc. everything is there! The Owlet Smart Sock 2 tracks your baby's heart rate and oxygen levels using clinically-proven technology Base station collects smart sock data and is designed to notify you with lights and sounds if something appears to be wrong Base Station works via Bluetooth and is designed to notify even if WiFi goes down or your phone dies so you can rest assured Using Owlet's app, see real-time wellness data and receive notifications! Please note: App is no longer available for iPhone users, must have an Android to access the app. I have been told if you already had the app prior though, it will still work for iphone. All reasonable offers accepted! :)