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
1
disappointed user
on April 27, 2026
Posted by: garmin randy
It’s great when it works. I’ve lost the connection to my phone it will not reconnect.
Written by a customer while visiting Garmin
Customer Rating
3
Better than a watch for sleeping
on April 24, 2026
Posted by: nick318
I love the form factor and ability to get me sleep data without having to wear an uncomfortable watch overnight. However, the device frequently has issues where Garmin connect seems to forget it or random nights that sleep data just doesn't sync and that's why i'm only giving 3 of 5.
Written by a customer while visiting Garmin
Customer Rating
5
Comfortable
on April 24, 2026
Posted by: Greg17
I’m two weeks into using this, and it’s much more comfortable than wearing a watch all night
Written by a customer while visiting Garmin
Customer Rating
4
Better than wearing a watch to bed
on April 22, 2026
Posted by: Buenas noches
I like it, but it resets if I wake up for more than an hour at night.
Written by a customer while visiting Garmin
Customer Rating
5
Great item; useful data
on April 21, 2026
Posted by: RAK187
I really am pleased with my Garmin sleep monitor. It shows some useful and interesting sleep metrics.
Written by a customer while visiting Garmin
Customer Rating
5
Worth it, but it can't be over tattoos.
on April 20, 2026
Posted by: Joe05
Once I got into work - it works really well. The problem is it can't be over tattoos. So I moved it to my right arm on the inside of my arm. Comfortable and works amazing
Written by a customer while visiting Garmin
Customer Rating
4
Thumbs up!
on April 19, 2026
Posted by: Conner
I feel like it tracks my sleep much better and more in depth
Written by a customer while visiting Garmin
Customer Rating
2
Not worth the money
on April 16, 2026
Posted by: DC Runner
Long time Garmin user, 15+ years. I had high hopes for this device, took a chance due to mixed reviews and think it’s a dud. Tracking is less reliable than my Fenix 8 pro or Epix gen 2. Both of those watches are large so I was looking for something easier to sleep with that produced more reliable sleep tracking. 50% of the time it stops tracking after about 3-4 hours. Device is fully charged and fit correctly on my arm. I paid full price only to see it popping up on sale everywhere right after. Disappointed, save your $ and consider an alternative.
Written by a customer while visiting Garmin