The Owlet Monitor Duo 2 combines the Smart Sock 3 and Owlet Cam 2 in one bundle for a complete picture of Baby’s well-being with the ability to track heart rate, oxygen level, and sleep trends while streaming HD video all in one place. Monitor what matters most by tracking Baby’s heart rate, oxygen level, and sleep trends, and be notified when readings fall outside Baby’s preset zones. Sound, motion, and now cry detection let parents know what happened before Baby started to cry. Watching video clips of sounds or movement before baby cries also helps parents understand their cues and why they are uncomfortable, rather than waiting until baby cries to try and figure out what they need.