Hello mj3t2ll/a this watch is water proof ???

Hi

No Apple Watch model is waterproof.

The model number that you asked about is an Apple Watch Sport (a 1st generation model).

Apple Watch (1st generation) and Series 1 models are splash and water resistant. You can, for example, wear and use them during exercise, in the rain and while washing your hands.

Apple Watch Series 2 models offer a higher level of water resistance and can be worn during shallow water swimming.

More information:

About Apple Watch water resistance - Apple Support

http://www.apple.com/watch/compare/

Identify your Apple Watch - Apple Support

I swim laps 2-3 times a week in salt water pool. On my third week with Series 2, no complaints. Exersize app tracks yards, laps, calories and total time. I burp twice with a shower rinse. Counting on it holding up over time. 🙂

You're welcome! 🙂