Heart rate

[Butterfly24]

My senses shows my heart rate over 130 and I’m just sitting still. I’ve reset and I’ve turned off the sense and nothing works. There was 1 day I didn’t wear the sense, but the day before it worked great. But not right now, I’m getting really upset with the Fitbit. I bought the sense to keep track of my heart rate since I had heart surgery. 

[eezeepee]

First welcome to the Fitbit community.

Second, I gotta ask but did you manually check your own pulse to see if you were or weren't at 130 BPM? You don't even need to do a count over 60 seconds or do a 15 second count and multiple. If you can feel your plus (chest or wrist) there are BPM sites you can just tap on your phone screen and it'll give you a number in several to taps. But at that fast a rate, even without counting, you can just feel if it's fast.

[Butterfly24]

Yes I have checked my pulse, it’s a habit 

[eezeepee]

It's interesting because most of the heart rate monitoring issues people have is that it reads too low. It's known to have a delay in showing heart rate changes and during exercises it can fail to read someone's max. Updates have made it a little better but it's still not considered one of the better devices for heart rate monitoring.

I would make sure the contact are is nice a clean and it's on snug but comfortably. If you're within your return period and it doesn't seem reliable, exchange it for a different device. If you stay with Fitbit, I believe the lower models like the Charge and Luxe do better. Look up the YouTube channel The Quantified Scientist who does objective testing on fitness trackers and smartwatches.

[Butterfly24]

Not within return date. It worked on Tuesday and I put it on charger that evening and didn’t wear it on Wednesday, I did wear it Thursday and it was messed up and of course it’s messed up on Friday. I wore it to bed last night and woke up during the night heart rate was up over 150