owlet — smart baby monitor — smart sock 3 — ios and android compatible — blue moon owlet monitor what matters parents around the world trust owlet every night to help them track their baby’s sleep. our award-winning smart sock tracks your baby’s sleep so while they rest easy you can, too. track how long and how well your baby slept, and review detailed reports on the number of wakings and light versus deep sleep. use your baby’s sleep reports to make changes to their schedule and build healthy sleep habits as they grow. the smart sock also integrates seamlessly with the owlet cam. save $50 when you upgrade to the monitor duo.