Charge 6 heart rate dips

[JamoC]

Does anyone else have heart rate dips at the start of a run? 

My charge 4 did not do this and was a steady line. The charge 6 HR is all over the place. 

 Moderator's action: Clarified subject

[ManuFitbit]

A warm welcome to the community forums @JamoC. 

Thank you for taking the time to share with me the information regarding this heart rate inquiry with your Charge 6. 

Please, take in consideration the following tips:

Fitbit’s heart rate tracking accuracy is affected by your personal physiology, device placement on your arm, and the activity you're doing.

For a more accurate heart rate reading:

• Wear your Fitbit device on top of your wrist, and make sure the back of the device is in contact with your skin.
• Wear your device a finger’s width above your wrist bone when you’re not exercising.
• Wear your device a bit tighter and higher during exercise for an improved fit. The band should be snug but not constricting (a tight band restricts blood flow, potentially affecting the heart rate signal). Many exercises such as bike riding or weight lifting cause you to bend your wrist frequently, which could interfere with the heart rate signal if the watch is lower on your wrist.

In order to see more information, take a look at the full help article: How do I track heart rate with my Fitbit device?

[Terpsucka]

I've seen so many variations with the fitbit 6 HR as to make it almost useless.  I've had many older fitbit models in the past, and never had these problems.  This is my current theory--

My older fitbits would occasionally lose contact with my skin, or whatever, and would simply not give a HR reading.  Makes sense, given that it doesn't actually know what my HR is!  I've never had my Charge 6 give me a blank HR reading. I suspect that during those times when it's not getting a good reading, it's guessing. When I would look at my watch with older models, I would see, oh, it needs to be adjusted.  But now, I never see a blank reading, so I don't know that it needs to be adjusted, and it just goes on giving me an incorrect reading.

[pekito]

My charge 6 definitively measures heart rate incorrectly/inconsistently - I "upgraded" from charge 5 and the new watch seems to measure correctly initially, but 5-10 minutes into a run the measured heart rate goes down beyond to what is possible. I have read many reviews about this.