The features on offer were great for the price, but they didn't work reliably for me. I've tried these on a few walks/jogs and found that they work at different heart rates. For example, the reading is a solid 91 when my Garmin Venu and OH1+ were at 120 and were bouncing up and down a bit. I called support and followed their instructions, removing and reinserting the battery. No luck for about 10 minutes in the next run. I tried it with and without the electrode gel. A few times it would also double the heart rate. As usual, returning it within the 30 day window was easy. Landed at my local cabbage. I ordered a Polar H9 and I hope it works better.
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