Glasses Form Swim Googles they have a smart screen where you can see all the data of the swim in real time to have total control of what you are doing in each moment
In the video you can see how, as the swimmer progresses, he sees the meters he has traveled and the swim time
These are some of the parameters that can be consulted, although you will have many more:
It also has an application where all training sessions are recorded and from which you can customize the data you want to appear on the screen.
They are not yet for sale, but on the official page they already have a release date of August 7 for a price of 199 $
Further information: https://www.formswim.com/