Used owlet smart sock 2 Good condition as is Includes 3 sizes for sock 0-1 month 1-4 month 4-18 month Original box and instructions included 2 holes in one sock from normal wear and tear Cords have a few marks on them but everything still works See all photos As is The owlet smart sock tracks your baby’s heart rate and oxygen levels using clinically proven technology base station collects smart socks data and is designed to notify you with lights and sounds if something appears wrong from the base. Owlet 2 is not supported anymore by the owlet app, can be used with base alone or for parts without the app, although you won't have access to the detailed readings and historical data. The base station will still provide visual and audible alerts if there are any issues detected, even if the app is not connected. The app is primarily for viewing readings and tracking trends, but the core function of the Smart Sock 2, which is to monitor heart rate and oxygen levels and provide alerts, remains functional without it. Owlet is not a medical device and is not intended to diagnose or treat, prevent or cure any disease or condition. Includes 3 fabric socks with universal fit sizes 1-3 up to 18 months Smart sock sensor- pulse oximeter with Bluetooth technology Base station Charging cords