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Welcome to Tech News Briefing. It's Wednesday, October 16th. I'm Zoe Thomas for the Wall Street Journal.

The best health tracker is one, you don't take off.

We'll tell you about the high-tech jewelry, celebrities,

tech leaders, and our personal tech columnist

turn to to track sleep and fitness. And then American kids and teens love social media,

but parents and lawmakers are concerned that it could be harmful to young people's

mental health. Some are calling for limits.

Scientists though say it's hard to tell whether these proposed restrictions can

really help youth mental health. We'll tell you about the research.

But first, the aura ring, like other smart rings,

is full of sensors that can measure your skin temperature, heart rate, and sleep.

They can be found on the hands of soccer star Cristiano Ronaldo, MetaCiego Mark Zuckerberg, and actor Tom Holland to name a few.

Our personal tech columnist Nicole Nguyen has been sporting an aura ring for the past two years

and has been trying out new smart ring models. She's here to tell us about them.

Nicole, these smart rings cost 300 to 400 dollars roughly. That's about as much as a smart watch. Why are people paying that much for a

ring that doesn't have as many features or a screen? It definitely sounds

counterintuitive. This thing is just as expensive as a smart watch and in many ways can do less.

It can't record a GPS workout for example. But a lot of people prefer smart rings because

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