I know babies should sleep on their backs. But by the age of 4 months, many babies start sleeping on their stomachs. It's generally okay if they turn over on their own. Although sometimes you feel like turning them back, you can't always do so. So if you sleep on your stomach, this thing will give you peace of mind. At least you're sure they're still breathing lol. Unlike some wearable products, this is not as accurate. 22 micromovements per minute means nothing. It has nothing to do with pulsing or breathing. But at least you know your child is fine. But you don't have to worry about putting these wearables on and off. My baby in particular has eczema, I don't want to add any extra stuff to his skin. And the battery, yes, it doesn't have a built-in battery, but I've been using it for over 20 days, it's still working great. The app also shows the battery level. So if I have to change the battery every month, I'm fine with that.
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