I am a little worried if the best innovation of the iPhone 7 that is worth promoting is... water resistance - something the $20 Casio watch I had back in the 1990's delivered flawlessly.
I don't see your Casio sending texts, browsing the web, buying or selling stocks, playing music, recording video, etc. etc. etc....
I hear that some rocks from previous millennia had water resistance. That's more impressive than your watch, right, because it's older?