Abstract: Real time data is the quickest method see if changes made in technique are being translated into better swim performance. Swimmers can see in real time the positive or negative benefits of changing their tempo, breathing, speed, or stroke technique. Real time data projected to the interior of the goggle lenses allows the swimmer instant feedback on their performance so that a more proficient overall technique can be attained by bold or subtle changes the swimmer initiates while in the pool. The design integrated into the goggle will be less obtrusive to the swimmer.