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Community Moderator Alumni are previous members of the Moderation Team, which ensures conversations are friendly, factual, and on-topic. Moderators are here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
Glad to see you here @mrphibb! Thanks for the suggestion @WendyB! 
It's good to know that you're doing your research, this is the best place to ask that information. I'd like to clarify that our PurePulse heart rate tracking offers automatic, continuous wrist based tracking for all-day health insights and workout intensity. It is uniquely designed to measure heart rate all day, with always-on optical heart rate sensors that still maintain extended battery life.
It allows you to accurately track workout intensity and calorie burn with finely tuned algorithms that provide insight through interactive charts and graphs, since Fitbit tracker were designed to help you to get the next level of fitness based on the intensity of your workouts. But HRV information or specific stat in regards of beat-to-beat variability are not showed in the Dashboard. The heart rate icon you see on the display tells you if you're in one of three heart rate zones: Peak, Cardio, Fat Burn Zone and as you can see in your Surge you get the Resting HR or if you're out of zone.
I found two suggestions in our Feature Suggestions board: Heart Rate Variability (HRV) measurement and HRV integration. Add your votes and comments here. This board is constantly being reviewed by our devs to make sure we are delivering on what our customers need. Fitbit is always striving to improve!
Hope this helps! 
Best Answer
Fitbit Product Experts Alumni are retired members of the Fitbit Product Expert Program. Learn more
I would add this to the features request forum. Please vote and the engineers look there for new ideas
https://community.fitbit.com/t5/Feature-Suggestions/idb-p/features
Once done come back and add the URL so others can vote!
Best Answer
Community Moderator Alumni are previous members of the Moderation Team, which ensures conversations are friendly, factual, and on-topic. Moderators are here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
Glad to see you here @mrphibb! Thanks for the suggestion @WendyB!
It's good to know that you're doing your research, this is the best place to ask that information. I'd like to clarify that our PurePulse heart rate tracking offers automatic, continuous wrist based tracking for all-day health insights and workout intensity. It is uniquely designed to measure heart rate all day, with always-on optical heart rate sensors that still maintain extended battery life.
It allows you to accurately track workout intensity and calorie burn with finely tuned algorithms that provide insight through interactive charts and graphs, since Fitbit tracker were designed to help you to get the next level of fitness based on the intensity of your workouts. But HRV information or specific stat in regards of beat-to-beat variability are not showed in the Dashboard. The heart rate icon you see on the display tells you if you're in one of three heart rate zones: Peak, Cardio, Fat Burn Zone and as you can see in your Surge you get the Resting HR or if you're out of zone.
I found two suggestions in our Feature Suggestions board: Heart Rate Variability (HRV) measurement and HRV integration. Add your votes and comments here. This board is constantly being reviewed by our devs to make sure we are delivering on what our customers need. Fitbit is always striving to improve!
Hope this helps!
Best Answer