Sleep trackers use your resting heart rate, heart rate variability and breathing data to estimate how long you sleep and how much time you spend in each stage.

Garmin has launched the Index Sleep Monitor, which is a lightweight sleep-tracking armband that offers a seven-night battery life. The major highlights of the device include detailed sleep monitoring, ...

If you're keen on tracking your sleep without strapping a gadget onto your wrist, Garmin says its new armband is just the thing – and it's designed for all-night comfort. Made from a stretchy, ...

Garmin, a brand better known for its Forerunner series of smartwatches, has introduced its first sleep-only tracker. Called the Garmin Index Sleep Monitor, it is essentially a lightweight ...