Garmin Index Sleep Monitor User Manual

Introduction

WARNING: Read the Important Safety and Product Information guide included in the product packaging. It contains warnings and other important information.

Getting Started

Before using the Index Sleep Monitor for the first time, complete these tasks to prepare it for use and familiarize yourself with basic functions:

• Connect the sensor to the charger to turn it on (Activating the Sensor, page 2).
• Download the Garmin Connect app to your phone and pair the device (Pairing the Device with the Garmin Connect App, page 6).
• Charge the monitor (Charging the Device, page 11).
• Check for software updates (Updating the Software Using the Garmin Connect App, page 12). Software updates offer privacy, security, and feature changes and improvements.
• Activate the sensor before sleeping (Activating the Sensor, page 2).

Device Overview

The Index Sleep Monitor consists of the following parts:

• 1. Strap: The adjustable band that holds the sensor.
• 2. Module: The main unit containing the sensors and electronics.
• 3. Sensor: The part that contacts the skin.
• 4. Charging Port: The port for connecting the charger.
• 5. Indicator Light: Provides status information about the device.
• 6. Module Slot: The opening in the strap where the module is inserted.

Indicator Light Status

Pairing and Setup

Pairing the Device with the Garmin Connect App

To use the connected features of the Index Sleep Monitor, you must pair it with the Garmin Connect app.

• Place your phone within 10 meters (33 feet) of the device.
• Download the Garmin Connect app from your phone's app store and open it.
• Connect the module to a power source using the USB cable (Activating the Sensor, page 2). When pairing mode is active, the indicator light flashes Purple for up to five minutes.
• To re-enter pairing mode, tap the module ten times in two seconds (optional).
• Scan the QR code with your phone.
• Follow the instructions in the Garmin Connect app to complete the pairing.

Setting an Alarm

To set an alarm, the Index Sleep Monitor must be awake and connected to the Garmin Connect app.

• In the Garmin Connect app, select ••• > Garmin Devices.
• Select your Index Sleep Monitor.
• Select Alarm > Add Alarm.
• Select Time and set the desired alarm time.
• Select Repeat and set or edit the recurrence.
• To set the alarm to gently wake you within a 30-minute window before your scheduled wake time based on optimal sleep timing, enable Smart Alarm. NOTE: The alarm will sound at the set time along with any earlier alarms. For example, if you set an alarm for 8:00 AM, the smart alarm may alert you between 7:30 AM and 8:00 AM.
• Select Save.
• To set and save additional alarms, select Add Alarm and repeat steps 4 through 7.

Editing an Alarm

• In the Garmin Connect app, select ••• > Garmin Devices.
• Select your Index Sleep Monitor.
• Select Alarm > Edit.
• Select the alarm.
• Select the option.
• Select Save.

Snoozing or Turning Off an Alarm

You can set an alarm using the Garmin Connect app (Setting an Alarm, page 6).

• When the module vibrates, select the desired option:
• To snooze the alarm, double-tap the module quickly.
• To turn off the alarm, quadruple-tap the module quickly.

You can adjust the vibration intensity in the Garmin Connect app (Adjusting Vibration Intensity, page 7).

System Settings

Setting Your Usual Sleep Schedule

The device uses your set sleep schedule as a guideline for accurate sleep tracking. Set your usual sleep schedule in the Garmin Connect app.

• In the Garmin Connect app, select ••• > Garmin Devices.
• Select your Index Sleep Monitor.
• Select System > Sleep Plan.
• Select your desired range.
• Select the options for Bedtime and Wake Time and enter the specific times.

Adjusting Vibration Intensity

• In the Garmin Connect app, select ••• > Garmin Devices.
• Select your Index Sleep Monitor.
• Select System > Alert Vibrations.
• Select the vibration intensity. NOTE: Higher vibration intensity reduces battery life.

Waking the Module

Place your finger on the sensor on the back of the module for 5 seconds.

The device powers on, indicated by the indicator light flashing Purple.

Viewing Sleep Data

To view your sleep data in the Garmin Connect app, the Index Sleep Monitor and the Garmin Connect app must be active and connected.

• When you wake up and end your sleep session, remove the sensor from your arm.
• Place the sensor near your paired phone.
• Open the Garmin Connect app. NOTE: The app must be open or running in the background.
• Wait a few minutes for the sensor to sync sleep data with the Garmin Connect app. Sleep data also syncs to compatible Garmin watches paired with the Garmin Connect app.
• You can view your sleep data in the Garmin Connect app or on your primary Garmin wearable device.

The image shows a sample sleep data screen from the Garmin Connect app, displaying sleep score, sleep stages (Deep, Light, REM, Awake), breathing variations, resting heart rate, SpO2, and respiration rate.

Manual Sync with Garmin Connect App

When the Index Sleep Monitor is awake and connected to the Garmin Connect app, it syncs data with the app automatically on a regular basis. However, you can also sync the data manually at any time.

• Place the device near your paired phone.
• Open the Garmin Connect app. TIP: The app can be open or running in the background.
• Select ••• > Garmin Devices.
• Select your Index Sleep Monitor.
• Select the option.
• Wait for the data sync to complete.
• View your sleep data in the Garmin Connect app.

Sleep Tracking

The Index Sleep Monitor automatically recognizes sleep and tracks your movements during your usual sleep schedule. You can set your usual sleep schedule in the Garmin Connect app. Sleep statistics include total hours of sleep, sleep stages, movement during sleep, resting heart rate, Body Battery™ changes, and more. The Sleep Coach provides recommendations for your current sleep needs based on your sleep history, activity, and HRV status. You can view detailed sleep statistics and set your usual sleep schedule in your Garmin Connect account (Setting Your Usual Sleep Schedule, page 7).

For more information, visit: www.garmin.com/garmin-technology/health-science/sleep-tracking/.

Body Battery

The sleep monitor analyzes heart rate variability, sleep quality, and its individual stages to determine the change in your Body Battery level overnight. If you sleep well at night, the change in your Body Battery should be greatest. During the day, physical activity and stress gradually deplete it. Short naps or rest can slow the decline or even add a little energy. NOTE: If you are sick, consume alcohol, or are stressed, your Body Battery may not recharge overnight.

When you sync the monitor with your Garmin Connect account, you can view current Body Battery changes, long-term trends, and other details.

Pulse Oximeter

The Index Sleep Monitor monitors your blood oxygen saturation levels using a pulse oximeter. Blood oxygen level information can be valuable for understanding your overall health and assessing how your body adapts to altitude. The sensor measures oxygen levels by shining light onto your skin and measuring how much light the tissue absorbs. This value is referred to as SpO2.

In the Garmin Connect app, your pulse oximeter readings are displayed as an SpO2 percentage. In the app, you can view more details about your readings, trends over the past few days, and any variations in your measured percentages (Breathing Variations, page 10). For more information on the accuracy of the pulse oximeter, visit garmin.com/ataccuracy.

Tips for Inaccurate Pulse Oximeter Data

• Wash and thoroughly dry your arm before putting on the sensor.
• Wear the sensor on your heart level.
• Do not apply lotion, moisturizer, or insect repellent to the skin under the sensor.
• Be careful not to scratch the optical sensor on the back of the module.

Heart Rate Variability Status

The Index Sleep Monitor analyzes your heart rate variability (HRV) during sleep, which is the variation in time between consecutive heartbeats. Training, physical activity, sleep, nutrition, and healthy habits all affect HRV. HRV values can vary significantly depending on sex, age, and fitness level. A balanced HRV status may indicate positive health indicators, such as a good balance between training and recovery, better cardiovascular fitness, and stress resilience. An unbalanced or poor status may indicate fatigue, increased need for recovery, or higher stress. For best results, wear the sensor regularly during sleep. The sensor requires three weeks of consistent sleep data to display your HRV status.

When you sync the monitor with your Garmin Connect account, you can view your current status and trends for heart rate variability.

Skin Temperature

The Index Sleep Monitor module includes a sensor that can track skin temperature changes during sleep. Skin temperature changes over time, for example, in relation to recent activity or the environment in which you sleep. Skin temperature can also reflect your overall body temperature and potentially alert you to the onset of illness. Track trends to help improve your sleep and health. TIP: For women, tracking skin temperature variations can help better determine menstrual cycle progression and ovulation. For more information, visit www.garmin.com/garmin-technology/health-science/womens-health/.

Your baseline skin temperature can be determined after three nights of wearing the sensor.

Breathing Variations

CAUTION: The Index Sleep Monitor is not a medical device and is not intended for diagnostic purposes or as a medical monitoring device. For more information on accuracy, visit garmin.com/ataccuracy.

The optical heart rate sensor in the Index Sleep Monitor features a pulse oximeter function that can measure your breathing variations overnight. Breathing variation information helps improve awareness of your sleep environment and overall health. Occasional or frequent breathing variations may be caused by your lifestyle or sleep environment. If you are concerned about your breathing variation levels, talk to your doctor.

In your Garmin Connect account, you can view more details about breathing variations, such as trends over several days.

Device Information

Charging the Device

WARNING: This device contains a lithium battery. Read the Important Safety and Product Information guide included in the product packaging. It contains warnings and other important information.

NOTICE: Clean and dry the contacts and surrounding area thoroughly before charging to prevent corrosion.

NOTE: If the device is outside the recommended temperature range, it will not charge (Specifications, page 14).

The device comes with a special charging cable. For information about optional accessories and replacement parts, visit buy.garmin.com or contact your Garmin dealer.

• Locate the back of the module.
• Connect the cable (connector Purple) to the charging port.
• Connect the other end of the cable to a USB power source.
• Fully charge the device. The indicator light flashes Purple while charging. The indicator light is solid Green when charging is complete. A full charge may take up to two hours.

Connecting the Device to a Computer

You can connect the Index Sleep Monitor to a computer to install software updates or transfer activity files and data to your computer.

• In the Garmin Connect app, select the ••• icon > Garmin Devices.
• Select your Index Sleep Monitor.
• Select System > USB Mass Storage.
• Enable USB Mass Storage.
• Connect the cable (connector Purple) to the device charging port.
• Connect the other end of the cable to a computer USB port.

Depending on your computer's operating system, the device will appear as a portable device, removable drive, or removable disk. NOTE: Mac® operating systems do not detect the device by default. To work with files from the device, you must use Garmin Express™ software.

Updating Software Using the Garmin Connect App

To update the device software using the Garmin Connect app, you must have a Garmin Connect account and have paired your device with a compatible phone (Pairing the Device with the Garmin Connect App, page 6).

• Sync your device with the Garmin Connect app (Manual Sync with Garmin Connect App, page 9).

If new software is available, the Garmin Connect app will automatically send the update to your device.

Caring for the Device

NOTICE: Do not expose the device to extreme shocks or rough handling, as this can reduce product lifespan. Do not use chemical cleaners, solvents, or insect repellents, as they can damage plastic components and connectors. Do not store the device in places exposed to extreme temperatures, as this could damage it. Do not machine wash the module. The module is resistant to occasional rain or splashes of water. However, if you put the module in a washing machine or dryer, it could be damaged (Washing the Strap, page 13). Do not use sharp or abrasive objects to clean the module. Be careful not to scratch the sensor on the back of the module.

Removing and Inserting the Module into the Strap

To wash the Index Sleep Monitor strap, you must remove the module (Washing the Strap, page 13).

• Release the hook-and-loop fasteners on the strap and open the module slot (1).
• Pull the module out of the slot (2).
• To reinsert the module, slide it into the open slot. The Garmin logo should face up. TIP: When the module is in the strap, the sensor and charging port should not be covered by any fabric.

Washing the Strap

Before washing the strap, you must remove the module from the slot (Removing and Inserting the Module into the Strap, page 13).

• Fasten the hook-and-loop fasteners before washing.
• You can wash the strap in a washing machine with laundry or separately.
• Place the strap in a mesh laundry bag to prevent tangling or sticking to other laundry.
• Use a small amount of mild detergent. NOTE: Do not use bleach, cleaners with aggressive chemicals, fabric softeners, rinse aids, or abrasive materials.
• Set the wash cycle to gentle with a maximum temperature of 40°C (104°F).
• Hang or lay the wet strap flat to dry.

Specifications

¹ The device can withstand pressure equivalent to a depth of 50 meters. For more information, visit www.garmin.com/waterrating.

Troubleshooting

Resetting the Device

You can reset the Index Sleep Monitor to factory default settings.

NOTE: Resetting the device erases long-term data, such as skin temperature and heart rate variability (HRV) data.

• In the Garmin Connect app, select ••• > Garmin Devices.
• Select your Index Sleep Monitor.
• Select System > Factory Reset.

The indicator light flashes continuously until the reset process is complete. NOTE: Resetting the device may take up to 10 minutes.

• Re-pair the device (Pairing the Device with the Garmin Connect App, page 6).

Checking Battery Status

You can check the battery status in two ways:

• In the Garmin Connect app, select ••• > Garmin Devices and select your Index Sleep Monitor.
• Remove the Index from your arm and check the indicator light. When the battery level is critically low, the indicator light flashes Red.

Sensor Not Syncing with App

• Ensure you completed the setup process (Activating the Sensor, page 2).
• Remove the Index sensor from your arm immediately after waking so it can sync with the Garmin Connect app right away.
• The sensor must be within range of your phone.
• Place your finger on the sensor on the back of the module for five seconds to wake the sensor.
• If the devices are paired, turn off Bluetooth on your phone and turn it back on.
• If the devices are paired, ensure the Garmin Connect app is awake or running in the background.
• If the devices are paired, remove the Index Sleep Monitor from your phone's Bluetooth settings and re-pair both devices (Pairing the Device with the Garmin Connect App, page 6).
• If the devices are not paired, turn on Bluetooth on your phone.
• Open the Garmin Connect app on your phone, select ••• > Garmin Devices, select your Index Sleep Monitor, and select the option to perform a manual sync.

Additional Information

• For additional guides, articles, and software updates, visit support.garmin.com.
• For information on optional accessories and replacement parts, go to buy.garmin.com or ask your Garmin dealer.
• Visit www.garmin.com/ataccuracy.

This device is not a medical device. The pulse oximeter function is not available in all countries.