Selling an Owlet Dream Sock smart baby monitor, only used for one week. We decided to get the Nanit instead. The sensor is included and works perfectly. Comes with everything shown in the pictures, including the charging base, multiple sock sizes, and the power adapter. This FDA-cleared monitor tracks your baby’s heart rate and oxygen levels, providing peace of mind through real-time notifications via the Owlet app. It’s a #1 Best Seller in smart baby monitors and has been a game-changer for many parents. Condition: Lightly used Usage: One week Includes: Sensor, socks, charging base, power adapter