Customer reviews from Garmin
Garmin - Index Sleep Monitor Size: S/M - Black - (2025)
Average customer rating
3.3
(202 Reviews)
Rating breakdown 202 reviews
5 Stars
59
4 Stars
43
3 Stars
36
2 Stars
26
1 Star
38
Customer Reviews for Garmin - Index Sleep Monitor Size: S/M - Black - (2025)
Customer Rating
1
Not Happy at all
on August 16, 2025
Posted by: Jedi’s Dad
Initially the Index sleep worked fine. Then 3 days after I began using it, it stopped syncing to my Connect App. I have tried everything including reaching out to Garmin Support and following their instructions. Still nothing, so the Index sleep sits on my nightstand while I wear my Fenix 8 24/7.
Written by a customer while visiting Garmin
Customer Rating
4
Helpful and useful information
on August 15, 2025
Posted by: Elnor
I’m in my second week of wearing the index sleep monitor. It does provide helpful information, however I’m not sure how accurate it is. Last night I woke up and was awake for several minutes, yet the monitor did not register any awake time for the entire night (and I know I woke up several other times although for short periods of time).
Hopefully this was a one off incident and it will accurately track my sleep going forward.
Hopefully this was a one off incident and it will accurately track my sleep going forward.
Written by a customer while visiting Garmin
Customer Rating
5
Cat's Meow!
on August 14, 2025
Posted by: CanoeU70 again
I'm very happy with it! Beats wearing my 965 all night long and it "connects" the data pretty quickly! Just recently added a "SleepMe" fancy "Chilipad" system that has a sensor that fits under the pad. Using it to "compare" data since we're all advised to NOT get overly concerned about "sleep scores." The "Chilipad/SleepMe" sensor has 2 pages worth of data (time I got in bed, time I got up + more). Since I read a book every night, that affects the stats. Because I set my sleep time at 2300-0630, my 965 "goes dark" at 2300 every night whether I'm in bed or not. Maybe Garmin can "sneak a peek" at the competitor's report and see if they see any improvements they can make.
Written by a customer while visiting Garmin
Customer Rating
3
Good - But Not Great
on August 13, 2025
Posted by: Cervelo
Simple setup, easy-to-wear, with excellent analytics. Battery life not up to specs, intermittent syncing to my dashboard. Overall not bad, but not up to normal Garmin standards.
Written by a customer while visiting Garmin
Customer Rating
2
Very inaccurate
on August 13, 2025
Posted by: Freddy B
Possibly with updates this would be a good reliable device. For some reason gamins devices struggle when it comes to sleeping. After 2 weeks of use, I can confidently say that it's not accurate. It moves around a lot, it says I've only gotton 2 hrs of sleep on nights I know got 7 hrs of sleep. If I followed Garmin's suggestions, I would basically be unproductive ever since I started using it. Hopefully they can iron out these issues.
Written by a customer while visiting Garmin
Customer Rating
2
So so.
on August 13, 2025
Posted by: Nvfro
When it works, it works great. Keeps disconnecting and very hard to tell if it’s on or off. Very hard to get it into pairing mode, plug it in as instructed and do not get flashing purple light. At this point it’s a waste of money.
Written by a customer while visiting Garmin
Customer Rating
1
Can't Keep a Charge for More than 2 Days
on August 12, 2025
Posted by: parexc
Out of 12 days of ownership, 6 days show no reports.
Presume the Battery went dead.
I am going to pursue a return on this product.
Presume the Battery went dead.
I am going to pursue a return on this product.
Written by a customer while visiting Garmin
Customer Rating
3
Marginally accurate
on August 12, 2025
Posted by: Larry Nanni
I've been using the sleep monitor for 2 weeks now. Initially it couldn't determine when I fell asleep or woke. That has gotten better however the pulse oxygen levels are still very suspect as they record low readings in the seventies. I think I'd be in organ failure at those levels.
Written by a customer while visiting Garmin