Disappointing swim

[Chercharly]

I have just recently bought the sense 2 after changing from an Apple Watch due to the extended battery life and detailed sleep scores. 
I swim 3 times a week and was sorely disappointed with my swim this morning. 
I had read in previous discussions that Fitbit does not track your heart rate whilst swimming due to inaccuracy from the water refractions so was expecting this (although done up tightly always found this really accurate with my Apple Watch) 
i was disappointed that after starting the workout you can’t see any stats whilst you’re actually swimming only the time and the time you’ve been working out. Although I’m not bothered about seeing calories or heart rate here, I was really disappointed that you cannot see the laps swam as I use this all the time. You don’t see this until the workout has finished and you open the app on your phone!!! I think it’s disappointing that this simple feature cannot be added. 

secondly and most importantly with how inaccurate the calorie counting is! I complete the same swim each time and my Apple Watch was able to track that each swim I burnt around 650 calories. This morning with my Fitbit sense 2, it has only tracked 250! I expected a small difference due to the heart rate monitoring but nothing this significant. I’ve been upset most of the morning with how little my swim has impacted my stats. 
I am absolutely gutted with this as enjoy all of the other features of my Fitbit but seriously considering returning this and switching back to an Apple Watch. 
there are too many compromises with this new Fitbit sense 2! 

[t.parker]

Not reading HR while swimming is something I can't understand. Fitbit should give an option like other manufacturers do. I can turn on/off HR reading during swimming on my Garmin watch. Yes, it may be less accurate. On the other hand, I did compared wrist and chest strap HR on Garmin and the wrist HR was good enough so when I swim I don't bother using chest strap (I'm not swimmer, just swim for leisure so this data isn't so relevant to me). I did similar test with my old Ionic and (despite issues with water touching screen) the HR readings in water were good enough, too (I tracked it as Workout so HR was there but no water lock was causing other issues).

The calories you get from swimming is (as you already know) because there is no HR. There is no way for tue watch to tell what intensity you swim at so it just makes assumption (probably based on MET).

[Gr4ndp4]

Hi, @Chercharly welcome to the community. I apologise for not being able to confirm the following because I do not have a Sense 2 but have used a Sense for swimming now for nearly two years. I do not think the navigation through the settings has been changed.

After touching "exercise"> "Swim" > you should see a starting arrow that you will touch to activate the water lock & start the exercise. Notice the little chevron at the bottom of the display, swipe up and you can personalise what you see while swimming. The central register is the largest (I have lengths here) the choice for data is easy to make.

I hope this solves your problem, let us know how you get on.

Cheers

[t.parker]

@Gr4ndp4 Sense 2 doesn't show lengths. This feature is gone. It shows only time during swimming. Like Versa 2/3.

[Chercharly]

@Gr4ndp4  I can confirm, like @t.parker has said, this feature isn’t available. The only option I have when I scroll down before starting a swim is to change the pool length, turn on always on display or choose a goal. In addition, the only goal you can set is a length of time! 

[Chercharly]

Neither can I. Like many have said, why they can’t even put it as an option for you to turn on or off? 
As with you with your garmin, I always found my Apple Watch to be accurate enough for my HR monitoring and I always did the strap up a little tighter just in case. 
and I think the inaccuracies with calorie counting (by not tracking HR during swim) far outweighs the inaccuracies you might get with tracking your HR because like you said, it does not recognise the intensity you’re putting into the swim.