Smartwatch Blog
![The measurement of blood oxygen level by smartwatches: How reliable is it?](http://deeprio.com/cdn/shop/articles/media._SL850__1_{width}x.jpg?v=1648127452)
 The new wearable tech metric focuses on blood oxygen levels - and it's going to change everything. Despite its complexity and seeming meaninglessness, pulse oxygen levels reveal sleep apnea and can aid athletes in recovery. By talking about blood...
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