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
Comfortable!
on September 12, 2025
Posted by: Karsie
Love my new Garmin Index. It's so comfortable you forget you are wearing it. The data appears far more sensitive as it's a dedicated device doing one job. Easy to use which is also a huge plus and easy to set up.
Written by a customer while visiting Garmin
Customer Rating
3
Great idea, but....
on September 14, 2025
Posted by: Gogolino
Like always with Garmin, the sleep monitor is well manufactured and nice to wear. I never have the feeling that something foreign is on my arm during my sleep.
The measurement though is unreliable. One night I went to bed at 12:30 am and got up at 8:00 am. Downloading the data to my fenix 8 it read: start of sleep 9:25, end of sleep 1:40 am. Of course it gave me a really bad sleep score of 35, after having been in the 86 to 93 range the nights before. I will see if this was a one time slip or if it will happen more often. This is definitely quite a bit irritating considering the cost of this gadget. How can the monitor start measuring without being worn or touched?
The measurement though is unreliable. One night I went to bed at 12:30 am and got up at 8:00 am. Downloading the data to my fenix 8 it read: start of sleep 9:25, end of sleep 1:40 am. Of course it gave me a really bad sleep score of 35, after having been in the 86 to 93 range the nights before. I will see if this was a one time slip or if it will happen more often. This is definitely quite a bit irritating considering the cost of this gadget. How can the monitor start measuring without being worn or touched?
Written by a customer while visiting Garmin
Customer Rating
1
Doesn’t work all the time
on September 15, 2025
Posted by: cs01
Only works half the time if I’m lucky. The reading of time slept and o2 is way off. I have a ring that does the same reading and they are completely different.
Written by a customer while visiting Garmin
Customer Rating
2
Needs some work
on September 17, 2025
Posted by: Dan S
I really want to like this as a Garmin fanboy but it needs some work. It’s extremely comfortable and unintrusive however the software is t there yet.
Ever since I switched from my fenix 8 to this band, my sleep is almost 100 every single night, which seems biased. The sleep times are not accurate, they were almost spot on with my fenix 8. For some reason this device thinks I put it on and fall asleep within 2 minutes every time when in reality I wear it for 30+ minutes.
I’m sure Garmin will figure it out eventually but with how good the watches usually are, I was hoping for better out of the box.
Response from ExpertVoice.comBy Care, September 18, 2025
Thanks for taking the time to leave this review, Dan! We recommend visiting our Support Center site to see best practices to get the most accurate data: http://ms.spr.ly/6422sWQH6
For further assistance, please contact Garmin Product Support by using the article linked above and selecting "Contact Us for More Help" at the bottom.
For further assistance, please contact Garmin Product Support by using the article linked above and selecting "Contact Us for More Help" at the bottom.
Written by a customer while visiting ExpertVoice.com
Customer Rating
5
Index Sleep monitor RoCks
on September 17, 2025
Posted by: ⚡️Lucky13⚡️
Awesome and comfortable device!! Bravo Garmin, I love it!!
Written by a customer while visiting Garmin
Customer Rating
5
Ir confirmed some things I guessed
on September 19, 2025
Posted by: PeteA2
After 2 weeks, I find it forces me to reevaluate my evening habits and get more consistent sleep.
Written by a customer while visiting Garmin
Customer Rating
5
on September 19, 2025
Posted by: Brandon J
took a few nights to figure out where I like wearing the band but now that I have it I love it and getting to take the watch off and let my arm breathe at night
Written by a customer while visiting ExpertVoice.com
Customer Rating
5
on September 23, 2025
Posted by: Jeff F
Very comfortable. Don't notice I'm wearing it to the point of having to remind myself to take it off in the morning. I could never stand sleeping with a watch or anything else on my wrist so this is perfect. Recording seems to be spot on also. One quick note is that nothing I found in the documentation tells you how to turn it on! It wakes up when you pick it up but if you then put it on it won't record. After waking it up you have to hold a finger over the HR optics and it will buzz twice. It is then ready to wear.
Written by a customer while visiting ExpertVoice.com