Garmin’s New Index Sleep Monitor: 9 Essential Features Explained

On Jun 18, 2025

Introducing the latest sleep tracking wearable from Garmin
Available for purchase at $169.99 / £149.99 / AU$299
Efficiently monitors various sleep metrics

You might love your Garmin Instinct 3, but find it inconvenient to use while sleeping because of its bulkiness. Good news! Garmin has introduced an alternative for you and every other owner of the top-rated Garmin watches: the Index Sleep Monitor.

This newly launched sleep tracking wearable resembles a larger variant of the Whoop tracker. It is designed to be light and screenless to ensure that it does not disrupt your sleep. Additionally, it boasts a week-long battery life and is available in two sizes: small/medium and large/extra large.

Earlier this month, a leaked video gave a sneak peek of what we now know as the Garmin Index Sleep Monitor. Details about its week-long battery life were also revealed in the leak.

The Index Sleep Monitor is designed solely for sleep tracking and is now available for purchase on the Garmin website for $169.99 / £149.99 / AU$299. Please note that delivery times are currently estimated to be 3-5 weeks (US and UK), and 4-7 business days (Australia).

Understanding the Key Features

Garmin devices are known for their abundant features, and the Index Sleep Monitor is no exception. It tracks a total of nine different metrics, providing comprehensive insight into your sleeping patterns.

The monitored metrics are sleep stages (light, deep, and REM), heart rate variability, blood oxygen saturation, breathing variations, respiration rates, skin temperature (with additional menstrual cycle tracking for women), Body Battery energy levels, stress tracking, and an overall Sleep Score.

In addition, the smart alarm feature gently vibrates at a time that aligns with your circadian rhythms, ensuring you start your day in the best possible way. As with all Garmin devices, the data is synced back to the Connect app on your phone.

Garmin has also addressed cleanliness concerns associated with sleep trackers. The Index Sleep Monitor band can be washed in a gentle cycle once the monitor is removed, ensuring it stays as fresh as your sleepwear.