The Smart Ring shows you the oxygen level in your blood

 

Although it looks like an ordinary ring, the 'Oura' ring can detect the level of oxygen in the blood by using an infrared LED sensor. In addition, it can also inform the user whether they are sleeping well or not. Controlled via an app, all data collected by the ring is known directly from the smartphone.

 

Even with the battery hooked up, the ring weighs quite bit, solely half dozen grams. Since the ring is waterproof, it can be showered afterwards. The ring, which can collect up to seven days of data on a single charge, costs $299.

Source: TechCrunch