Customer reviews from Garmin
Garmin - Index Sleep Monitor Size: L/XL - Black - (2025)
Average customer rating
3.3
(174 Reviews)
Rating breakdown 174 reviews
5 Stars
52
4 Stars
41
3 Stars
29
2 Stars
18
1 Star
34
Customer Reviews for Garmin - Index Sleep Monitor Size: L/XL - Black - (2025)
Customer Rating
5
I have no idea what it does
on August 20, 2025
Posted by: Pickens Cyclist
It appears to be collecting data but I have no idea what to do with the data it has collected.
Written by a customer while visiting Garmin
Customer Rating
4
Almost perfect
on August 20, 2025
Posted by: Cecenow
Band is not wide enough for my arm and ends up pinching off circulation if I tighten it up to prevent it from slipping off during activity and sleep as well.
Written by a customer while visiting Garmin
Customer Rating
4
Comfortable
on August 20, 2025
Posted by: Paigew
I bought this because I’m not always comfortable sleeping in a watch. It’s comfortable to wear and seems to function much like the watch. I wish it connected and updated the app more automatically. I have to go sync it and then sync my watch to get the data and the morning report.
Written by a customer while visiting Garmin
Customer Rating
5
Great monitor
on August 21, 2025
Posted by: Lauren S
I have been using this sleep index monitor for about a month and it’s been great. I was looking for a solution to track sleep that did not require me to wear a watch and this fits the bill perfectly. It’s comfortable to sleep in and holds a charge for several days. I am happy with this monitor.
Written by a customer while visiting Garmin
Customer Rating
2
Well actual nothing really use full
on August 21, 2025
Posted by: SvenW
I use the device now since 1 or 2 weeks.
Compare the epix pro there are not really a big difference of the informations.
Compare the epix pro there are not really a big difference of the informations.
Written by a customer while visiting Garmin
Customer Rating
1
Not worth the expense
on August 23, 2025
Posted by: KevD24
I have a Fenix 6 and the only thing the sleep monitor does that the Fenix does not is the body temp measurement and breath variations.
The monitor really is only “needed” if you don’t wear your watch to bed. Becasuse most Garmin watches already do all the functions of the monitor.
In addition to it not really do anything more than a Garmin watch already, you are not supposed to sleep on the arm that it’s on.
Kind of hard if you happen to sleep on both of your sides throughout the night.
Overall, not worth it if you already have a Garmin watch. Pretty lackluster product that doesn’t offer anything special.
Written by a customer while visiting Garmin
Customer Rating
4
Good Quality,
on August 24, 2025
Posted by: Txfit
I recently purchased the Index Sleep Monitor and have been using it consistently for about a month. The battery lasts quite some time. It only needs charging after a few days. After 7 days of use, the Index provides additional data such as skin temperature changes and HRV, which I don't know how to interpret just yet. However, it is fairly comfortable to wear and much more comfortable than my Garmin watch and the alarm function is good. I am still evaluating if this device will be useful for the data it provides. For the mean time, I think it is just ok. Not revolutionary, but if it wasn't for the FSA funds I used to purchase it with, I don't think I would've spent the money on it.
Written by a customer while visiting Garmin
Customer Rating
5
Comfortable
on August 24, 2025
Posted by: Chris P.
So far so good with the sleep index. Comfortable to wear and provides accurate sleep data.
Written by a customer while visiting Garmin