Customer reviews from Garmin
Garmin - Index Sleep Monitor Size: L/XL - Black - (2025)
Average customer rating
3.3
(223 Reviews)
Rating breakdown 223 reviews
5 Stars
66
4 Stars
48
3 Stars
38
2 Stars
29
1 Star
42
Customer Reviews for Garmin - Index Sleep Monitor Size: L/XL - Black - (2025)
Customer Rating
3
It's good, but not great.
on August 19, 2025
Posted by: Anonymous
I bought it about a month ago and have been using it consistently alongside other wearables that I've used for years to track my sleep. I find the comfort of this index more appealing compared to wrist-based wearables for sleep tracking. It does a decent job of recording my sleep when I am actually asleep. However, my biggest criticism is that it consistently fails to detect when I wake up during the night. I often wake up and read to help myself fall back asleep, but the index never recognizes this as being awake, whereas my other wearable always does. There is potential here, but I don't think it’s quite there yet.
Written by a customer while visiting Garmin
Customer Rating
3
Communication across multiple products.
on August 19, 2025
Posted by: Dpreiss
Communication's across other garmin devices is much needed when analyzing sleep. I Should have investigated this before purchasing. Sleep metrics tied to specific workload metrics of the day is required to properly analyze the full picture of what is occurring and how to best make decisions going forward.
Written by a customer while visiting Garmin
Customer Rating
2
Comfortable but unreliable
on August 19, 2025
Posted by: Superfelll
I’ve had mine a few weeks now, it’s comfortable to wear and when it works the data is as good as from my FR965. But it’s pretty unreliable when it comes to having the data apply to training status. Sometimes it works, sometimes it’ll claim there’s no sleep data or no HRV data. I’d hold off until they get the bugs sorted out.
Written by a customer while visiting Garmin
Customer Rating
5
A very comfortable alternative to wearing a watch
on August 19, 2025
Posted by: Bill662
I've been doing sleep tracking with my Garmin watches for a while now. This is somewhat uncomfortable especially since i have wrist problems. The sleep band is VERY comfortable, I don't even realize I'm wearing it. I think the accuracy is a little better, too.
Written by a customer while visiting Garmin
Customer Rating
2
Useful information, not sure the battery life...
on August 19, 2025
Posted by: Sarai
It's great to finally has this one from garmin. It's a great addition to my health trackers. I'm not sure why the battery has a short life, I have to recharge it every 3-4 days, it's normal?
Written by a customer while visiting Garmin
Customer Rating
1
Only worked one night
on August 18, 2025
Posted by: sag47
I had no problem syncing it the first time and wore it that night and it was comfortable and it gave me readings, the second night nothing. I tried to resync it and was not able to get it to sync so I sent it back.
Written by a customer while visiting Garmin
Customer Rating
3
Almost There
on August 18, 2025
Posted by: QDawg
I wanted this device to get more detailed sleep metrics, and to give my wrist a break from my watch while I'm sleeping. It accomplishes this well, but there are still some things that need tweaking with the integration into the TrueUp system to give a complete Unified Training Status.
Written by a customer while visiting Garmin
Customer Rating
4
Silent Alarm Helps Keep Me Married
on August 17, 2025
Posted by: NotDeadYet!
If you are like me, and I imagine a number of Garmin users, you are up before sunrise getting in your run or ride. However, my wife needs her sleep and an audible alarm wakes her up and often she can’t get back to sleep. My Garmin watch has a silent alarm; however, it is a bit bulky for me and often wakes me up when I roll over. So, I was excited when Garmin introduced the Index Sleep Monitor embedded in a soft cloth and worn on the upper arm. It is incredibly comfortable, which helps with my sleep, and gently vibrates to wake me up based on the time I set in the Garmin Connect app, which keeps my wife happy. You can set the vibration level to low, medium, or high.
I also believe the Sleep Monitor does a better job of sleep tracking than my Garmin watch, as the watch sometimes struggles to accurately take readings through my skinny, bony wrist and thin skin. Also, I often turn off the oxygen saturation sensor on my watch since it is energy hungry, whereas it is always turned on for my Sleep Monitor while maintaining excellent battery life. The sleep data is great, but I would have bought it just for the comfortable, silent alarm.
The only reason I don’t give the product a 5 star rating is because it doesn’t always easily synch with Garmin Connect, which is something I never have to think about with my watch or bike computer.
Written by a customer while visiting Garmin