Yes the Samsung Fit Pro 2 is waterproof. I bought it to measure swimming laps, speed. It is completely swimproof and even has a function to "lock" the screen when you are measuring your swimming so that the water or movement of your arms doesn't accidentally turn it off. I have only had it for a short while, through a total of four, hour long swims. Definitely a learning curve to figure out how to use-but is works great. I wear it when showering and running-and I sweat like I am swimming when I run. So far, so good.