"The way i understand evolution"
...is that you don't. Because you've never read "On the Origin of Species" in your life.
'Why don't those in the Bible Belt accept Evolution? Because it hasn't happened there yet.' You are the reason why that joke exists, deciple.
"If that is true wouldnt it be possible to take something that already functions such as a wristwatch and send it off to a distant planet that resembles the conditions here on earth and have some kind of mars rover put it in the dirt and over millions of years shouldnt it turn into something? No it will still be a wristwatch in the dirt."
Which will still be made by Rolex/Tudor, Omega*, Breitling, Eterna, Patek Philippe, Baume et Mercier, Jaeger LeCoultre - or even Sekonda. Even the watchmaker had a mother/father.
But you want to spend billions of dollars on a mission to launch a several thousand/hundred/tens of pounds timepiece to Mars, just so that NASA's still-operational MER Rover Opportunity can detect it, you go right ahead, derpcycle. The staff at NASA/JPL could do with a laugh!
*- Speedmasters were standard issue to the Apollo astronauts. In Apollo 13, Jack Swigert even improvised the tachymetre bezel on such as a slide rule, so as to calculate the seventh course correction burn, as they wanted to save precious power that would otherwise be wasted in using the Command Module's main computer (which had just 32K of RAM. Just consider that, next time you complain about not having enough memory in your 'puters!)