Do you know how you slept? The Index Sleep Monitor sleep tracker tells you. This comfortable, lightweight, upper-arm wearable sleep tracker measures sleep and recovery.

The data includes sleep quality scoring, sleep stages, and heart rate variability, which help you better understand your body’s recovery during the night (the presented data is intended as an accurate estimate of the monitored values).

Women’s wellness tracking provides more detailed information about the menstrual cycle based on skin temperature, such as more precise estimates of the start date of menstruation and ovulation estimates (this feature is not intended to support fertility, contraception, or fertility regulation and is not a medical device).

If you use a compatible Garmin smartwatch during the day, the data syncs seamlessly to the Garmin Connect™ app, where you can find more information about your wellness and physical activities.

The device battery lasts up to 7 nights. S–M: Fits an upper arm circumference of 20–29 cm.