is a senior reporter and author of the Optimizer newsletter. She has more than 13 years of experience reporting on wearables, health tech, and more. Before coming to The Verge, she worked for Gizmodo ...

One of the most important metrics on a Fitbit tracker is the Estimated Oxygen Variation – and now that every tracker is fitted with an SpO2 sensor, everyone can take advantage. Blood oxygen can be ...

The new Fitbit Charge 3 may have a slick touchscreen and swimproof design, but it's a new sensor that could turn the wearable from a simple sleep tracker to a nighttime diagnostician. The ...