Great Condition Owlet Smart Sock 3 Heart Rate/Oxygen Baby Monitor (OWL-BM06NNBBYG) - Mint Overview Keep your baby safe, even while you sleep, with the Owlet Smart Sock 3 baby monitor. This system features a fabric sock equipped with a heart rate and oxygen sensor to keep track of your child's well-being. It comes with a base station to alert you when the readings change and it pairs with a companion app so you can view real-time information from anywhere. Peace of mind all night long Track your baby's heart rate and oxygen levels and receive alerts if levels leave the "safe zone" Monitor sleep trends including hours slept, number of wakings, and sleep quality Companion app allows you to view readings in real time and delivers important notifications Compatible with the Owlet Cam (sold separately) Comfortable and convenient Fabric sock fits babies 0-18 months and 5-30 pounds and can be worn on the left or right foot 16-hour battery life keeps it going all night long so you can rest easy Charges wirelessly on the base station in just 90 minutes and the quick charge function provides 8 hours of life in just 20 minutes