A:Answer It says the same thing for the Versa but as soon as I got into the pool and started swimming, the face opened up and it fried the watch. So no, I would not trust the Charge 3 or 4 either for the swimming exercise.
You can probably take a shower with it and go in the rain, but not swimming, even though it has swimming in the exercise. What I do, I add swim and I put how many minutes I did it and it will give you the calories based on that.