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Polar
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The problem is that Bluetooth does not transmit in water. You have to use a device that can save to memory and then look at your heart rate data after uploading your session. It’s the same with ANT+. In your case, you would use Polar Beat to start a recording to the H10 memory, and then upload the r
...nepeandon in r/Polarfitness
May 7, 2026 at 10:00 p.m.
8
I’m not convinced I get any real value from knowing heart rate during swims, but Polar’s Verity Sense comes with a clip that attaches the sensor to your goggles and measures heart rate from your temple. It works perfectly (and even counts laps).
sathomasga in r/triathlon
July 27, 2026 at 11:34 a.m.
4
I am finding heart rate pretty ok although I do not trust optical sensors and always use an external heart rate monitor. After reading your post, I did some hill intervals (climbing on 11% average grade hills). I used a Garmin Epix paired with a Polar Verity Sense, the Pace Pro on my left wrist and
...SoftGroundbreaking53 in r/Coros
October 30, 2025 at 4:37 p.m.
5
That’s exactly how I use my Polar Loop. I wear my V3 for training sessions, and when I get home I synch it, turn it off (saves battery life), and put on my Loop for the rest of the day. Since the latest firmware updates I have found the Loop’s heart rate tracking and sleep tracking to be flawless. A
...nepeandon in r/Polarfitness
October 14, 2025 at 10:04 a.m.
5
Polar H9 Chest strap. I used to use verity sense or my apple watch, both are optical sensors but they're not great for tracking boxing or other HIIT workouts. They lag so much and misses a lot of heart rate spikes. Only problem with the chest strap is that it's pretty uncomfortable for me. But they'
...Sacabubu in r/ThrillOfTheFight
April 14, 2026 at 4:46 a.m.
3
First and foremost, you need to understand that calories are not counted by the heart rate monitor itself, but by the Polar algorithm. What you receive from the monitor is simply the heart rate reading. The most precise measurements come from a chest strap. The Verity Sense uses an optical sensor, w
...pwpawel in r/Polarfitness
March 25, 2026 at 11:43 a.m.
4
Wrist sensors are vulnerable to cadence lock, where the watch thinks your running cadence is your heart rate (so instead of showing 125 it says your heart rate is 165 which is clearly wrong). I have a Coros Pace 3 and this was an extremely annoying problem for me. It didn't matter how tight the watc
...mediocre_remnants in r/trailrunning
July 31, 2025 at 8:44 p.m.
7
Cadence lock. The "heart rate" is actually your running cadence. It's a problem for all wrist-worn optical heart rate sensors, some more than others. It's also an individual issue: some folks never have the problem, while others have it constantly. Possible fixes, not necessarily mutually exclusive:
...sathomasga in r/AppleWatchFitness
August 9, 2026 at 12:22 a.m.
2
Smart watches wrist HR sensors can be very unreliable especially when shock is involved. Are right handed and wearing the watch on your left wrists but have a 2 handed backhand ? That might be enough to throw off the readings. Being a keen cyclist as a well as playing tennis - only light hitting wit
...Fluffed-it-right-up in r/10s
April 19, 2026 at 9:16 p.m.
2
Hi there The H10 is a sensor. A plain non-smart sensor which basically either record the heart rate in its memory if triggered by Polar Beat app, or broadcasts heart rate and some other data lika RR, ECG and Acceleration depending on which application it is used with. Most often only HR. It does not
...sorryusername in r/Polarfitness
July 25, 2025 at 4:41 a.m.
6

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