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
4
Much more comfortable
on August 30, 2025
Posted by: Mjb121
Better sleep due to greater comfort. Unfortunately I cannot feel the vibration sufficiently to wake up, so on days when I need to use an alarm I still wear the watch.
Written by a customer while visiting Garmin
Customer Rating
5
Comfortable Sleep Monitor
on August 30, 2025
Posted by: William W
This sleep monitor is very comfortable and allows those who don't like sleeping with their Garmin watch (like me) to track sleep and enable the advanced metrics on higher end watches. The arm band is comfortable and you barely notice that it is there most of the time. Occasionally it may feel like it is falling off, but I suspect that is the edge of the sleeve of my t-shirt without feeling the entire sleeve on my arm.
I have not washed the arm band yet, but that is a nice feature to have.
Battery life is as advertised so far.
While not a necessary device by any means this is nice to have if you are finicky with what you wear while sleeping.
Written by a customer while visiting ExpertVoice.com
Customer Rating
4
Works great but Set-up needs work!
on September 2, 2025
Posted by: Bro3113
Fit and feel of this product is great, but the Bluetooth set up needs to be more comprehensive. Directions given are not adequate. I had to go out to Garmin help for the proper procedure to on board the Bluetooth. This was very frustrating as all my other Garmin products connected with ease. Overall, the product work great.
Written by a customer while visiting Garmin
Customer Rating
5
great product
on September 3, 2025
Posted by: BULLFROG
Bought this for the sleep score, but find the body battery and all the other features are very interesting to see.
Written by a customer while visiting Garmin
Customer Rating
4
Almost perfect
on September 3, 2025
Posted by: Jrholls
While the cuff is quite comfortable and doesn’t impact my sleep, the device itself sticks to my skin and feels kinda weird when I remove it in the morning. I wear it loose to minimize this but it doesn’t seem to help. I also wish it had more features like real time heart rate tracking for how expensive it is. Overall it does what it is supposed to do, and gives my wrist a break each night. I use my smart watch as a running coach, so it’s great to have my sleep data added to Garmin Connect.
Written by a customer while visiting Garmin
Customer Rating
4
Mostly great new product
on September 5, 2025
Posted by: CDB76
I first ordered a sleep monitor about a month ago, but I was told by Garmin to send it back for a new one. I was also told this is a brand new product type and a first version.
The new one monitor seems to work properly.
The app doesn’t seem have to a notification option for battery level. Adding a battery notification would be most helpful. It’s a good first try. Keep up the good work, Garmin.
The new one monitor seems to work properly.
The app doesn’t seem have to a notification option for battery level. Adding a battery notification would be most helpful. It’s a good first try. Keep up the good work, Garmin.
Written by a customer while visiting Garmin
Customer Rating
5
Comfortable Sleep Monitor
on September 7, 2025
Posted by: BillyBob89
This is a comfortable sleep monitor and great for those like me who don't want to sleep with their watch. You barely notice the armband once it is on and the battery lasts for about a week.
Written by a customer while visiting Garmin
Customer Rating
3
Comfortable but didn’t record a few nights
on September 7, 2025
Posted by: Viviana
I was looking forward to try this device. So comfortable and thin, I’m a side sleeper and could barely feel it while wearing it. I loved the alarm and how you can snooze it. It would be perfect if it wasn’t for those two nights in 2 weeks that I had it that it didn’t record my sleep. I followed the instructions about waking it up before using it but still not sure why. I decided to return it because it was too expensive for that intermittent functioning.
Written by a customer while visiting Garmin