Polar H9 Chest Strap Heart Rate Sensor

Reviews

1. J Jacek Mrozowski 5/5

   Does exactly what it was made for

   My Spirit XG400 elliptical paired with the H9 on the 5 kHz band immediately, and it outperformed the unit that shipped with the machine. High build quality and you can disable it simply by detaching the sensor from the elastic strap.

2. J Jose Garcia 5/5

   Excellent precision and comfortable for training

   Very happy with the H9. Connection is fast and stable, and heart-rate readings feel accurate compared with my watch, especially during sprints. The band fits well and becomes unnoticeable after a few minutes. Setup with my phone’s health app was quick and trouble‑free. Feels solid and built for regular use.

3. F Felix R. Belanger 3/5

   Stopped connecting after several months

   Worked well for about six months, then began failing to connect to apps and my elliptical. A battery change restored it briefly, but the issue returned and the unit no longer pairs reliably.

4. H Héctor Guevara Córdova 5/5

   Good, reliable sensor

   Good sensor. Accurate and dependable.

5. R Rk Magill 5/5

   Solid performance for cycling and indoor bikes

   Pairs instantly with Peloton and my Garmin bike computer with no dropouts. Comfortable to wear and conserves battery. The sensor detaches so you can wash the strap, which is great after sweaty sessions. Also got one through FSA for my partner.

6. B Brad 5/5

   Great app support; strap may need a DIY fix

   The strap tends to slide for people with large lats, so I ended up adding a zig‑zag silicone grip strip to the inside and sewing/gluing it on — now it stays put. You can also buy a grippier replacement strap, but expect to switch straps every several months. Works perfectly with my older Polar watch once secured.

7. H HristovV 5/5

   Simple, reliable heart-rate strap

   I've used it for over a year on runs and rides. Only changed the battery once and the band hasn't slipped. Pairing is automatic and it powers down when removed. No status light, but it’s not missed and helps preserve battery.

8. T TWilhite 5/5

   Accurate readings; helps beyond wrist sensors

   At nearly 60 and after an AFib diagnosis, I wanted something other than wrist optical readings. The H9 won’t diagnose arrhythmias reliably, but heart-rate data is dependable once the strap is snug and the contacts are moistened. Ran four miles with it without discomfort.

9. G Gabriele 5/5

   Excellent strap, comparable to the H10 for most users

   Bought the H9 as a lower‑cost alternative to the H10 and it performs superbly in field tests — from yoyo runs to martial‑arts sessions. The extra H10 features are unnecessary for most hobbyists. H9 readings are accurate and, with the right apps, can even capture HRV for more detailed analysis.

10. G Glynn 4/5

    Does what it should, with occasional connectivity quirks

    After a few weeks it tracked my treadmill and elliptical heart rate accurately compared to manual pulse checks. Sometimes the machine’s built-in sensors override the strap, but removing and reattaching fixes it. I wish it had a proper on/off switch and used a CR2032 instead of a CR2025.

11. A Aleksei 5/5

    Fits the intended purpose

    Matches the description and pairs perfectly with my Polar watch. It also works with gym equipment that supports Bluetooth HR. On some machines the displayed heart rate fluctuates after about ten minutes, which I haven’t been able to explain.