I have had an Ionic for years, and I've gone through many cycles of it failing, and getting a refurb, then that one failing, getting another refurb, etc. Obviously the product has some serious defects, but Fitbit has stood behind it in impressive fashion, in my opinion.
So I thought I would take a chance on the sense. I like the features, and consider it a good value for the features it has. However, I have found that while on my elliptical at nearly full resistance, the heart rate monitor is way off.
With my Ionic, I would get readings in the 150's to 170, which tracked very well with my chest band. Even so well, that I quit wearing the chest band.
With my Sense, while working out, it never goes above 110, then it falls back into the 80's. After I stop working out, the heart rate actually goes up, into the 130's, and then appears to track correctly. I have tried wearing it loose, and tight, and it makes no difference. Obviously, this makes the device unusable. I did contact support, and they had me do a reset, and re-download the firmware, but come on, we knew that wouldn't work, which it did not.
They gave me a reference number, and I will be getting back in touch with them on Monday.
So I'm just checking to see if anyone else has seen this with their new sense, as I have not seen anyone post this in this forum. Kind of hard to imagine what could be defective that would only cause this issue, only while exercising.
