Garmin Index Sleep Monitor - L/XL

Manufacturer's Website

Description

Introducing the Garmin Index Sleep Monitor - L/XL. A lightweight, purpose-built sleep and recovery tracking device designed to be worn comfortably on the upper arm throughout the night. Unlike traditional wrist-worn wearables, it uses a soft, stretchy band made from a breathable blend of 70% nylon and 30% spandex, allowing it to stay secure without restricting movement during sleep. Its slim, low-profile design and minimal weight make it easy to forget you are wearing it, while still capturing highly detailed overnight health data.

At the core of the device is a compact sensor module that houses advanced tracking technology, including a Pulse Ox blood oxygen saturation monitor, accelerometer, and optical heart rate sensor. These sensors work together to measure key sleep metrics such as heart rate variability, respiration rate, skin temperature, and breathing variations throughout the night. By analysing these signals, the device provides a comprehensive overview of sleep quality, recovery status, and overall nightly physiological changes, helping users better understand how well their body is recovering. One of the standout features of the Garmin Index Sleep Monitor is its ability to track skin temperature trends overnight, which can contribute to broader wellness insights such as cycle tracking and ovulation estimates through Garmin Connect. Combined with Body Battery energy monitoring and respiration tracking, it offers a detailed picture of how sleep impacts daily energy levels and readiness. The device also supports breathing variation analysis, giving users a more nuanced understanding of sleep disturbances and recovery quality over time.

Designed for convenience, the monitor offers up to 7 nights of battery life on a single charge, making it suitable for continuous multi-day use without frequent recharging. It charges via Garmins proprietary charging system and is fully compatible with both Android and iOS devices through Bluetooth Low Energy connectivity. All data syncs seamlessly with the Garmin Connect ecosystem, where users can review sleep scores, trends, and recovery insights alongside other health and fitness metrics. Practicality is also a key focus of this device, as the band is fully machine-washable, making it easy to maintain hygiene over long-term use. Its L/XL sizing ensures a comfortable fit for a wide range of upper arm circumferences, and the flexible material adapts naturally to movement during sleep.

Features

• Soft, stretchy, breathable
• Mix. 70% nylon, 30% spandex strap
• 452 x 63.5 x 0.55 mm (17.8 x 2.5 x 0.02) in size
• Lithium ion battery
• Comfortable, breathable design worn on the upper arm
• Up to 7 nights of battery life
• Sleep tracking and recovery metrics
• Breathing variations throughout the night
• Skin temperature tracking for past ovulation estimates and more
• Machine-washable band for easy cleaning

Specifications

Package Contents

• 1x Garmin Index Sleep Monitor - L/XL
• 1x Charging/data cable
• 1x Documentation