Owlet sells a "smart sock" that measures pulse and O2 levels and alerts you if they drop below a set level. It's not a medical grade device like the NICUs have

Owlet sells a "smart sock" that measures pulse and O2 levels and alerts you if they drop below a set level. It's not a medical grade device like the NICUs have, but it lets you rest easier knowing you'll be notified if your baby's pulse or O2 levels drop.