Smartwatches have dominated the wearable technology market for years, but a much smaller gadget is quietly becoming one of the most advanced health trackers available.

However, navigating the market can be difficult, as many devices look similar but differ significantly in comfort, sensor reliability, app quality, and reporting features. Even after choosing a ...

They feature Garmin's Elevate wrist-based heart rate monitor and a Pulse Ox sensor for blood oxygen saturation monitoring. Garmin advertised that the Forerunner 70 deliver up to 13 days of battery ...