Noticed my watch wasn't turning today, how do I wind this model?

You just turn the winding stem back and forth several times.

You have to wind the watch manually after you buy it. there should be a little knob at about 3 o'clock. Turn it clockwise about 40 times. Make sure you wear it enough (8 hours a day) or else you have to wind it every day like this

I would guess that the battery is dead. If you take it to a jewelery counter in a department store they can check it for you. Best of luck.

Almost all automatic wristwatches made today have an 18-24 hour "power reserve" when fully wound. A 24 hour reserve is actually very, very good. I can't think of a modern self-winding wristwatch that has a 48-hour power reserve because that would require a super-long or much larger mainspring than would fit in a modern watch movement / case. There may be some hand-crafted or super-premium watches that can do this, but only a very select few.
Manual wind railroad pocket watches, which were some of the finest and most accurate mechanical watch movements ever made, generally had a 40-hour power reserve. That extra capacity was created by using a large mainspring to store the extra energy. These mainsprings could be used because of the much larger size of these watches, compared to modern wristwatches.
If you are concerned about keeping your watch ticking, even when you're not wearing it, you might want to look at a "watch winder"--basically, a small watch case that rotates the watch for you, keeping the automatic winding rotor moving and the watch ticking. In addition, sitting at a computer all day will wind your watch much less than walking and otherwise moving around. Even though you're wearing your watch, if you're not moving, you're not winding it.

mcdevito75 here, Use the waranty info from the box and call Invicta. In the meantime, turn the winer stem and hold the watch close to your ear do you hear a clicking?? Some automatic watches will only wind while they are in motion on your wrist, Hold the watch in your hand a turn your hand in circles and see if the watch starts up.

Watches fall into two basic categories - quartz and mechanical. If you bought a quartz watch that is battery powered you need to set the watch and push the crown in all the way to start the watch. Sometimes you need to remove a small plastic piece from the stem to push it in all the way. If you bought a mechanical watch, even if it is an automatic self-winding model, you will need to manually wind it to get it started. If you are still having problems take it back tot he dealer for a demonstration or to have the battery replaced if required. An instruction sheet and warranty card is packaged with almost all new watches. Sorry I can't be more specific but if you care to share the make and model number I may be able to help you further.

http://calibercorner.com/seiko-caliber-nh25a-vs-nh35a/
The link will take you to a drawing of the movement.
You will see an adjustment - or + you need t adjust it to the -.
Best done by a pro but totally something you can do on your own if you have some small screwdrivers.

Unscrew the crown pull out the crown to the first position, One click and rotate the crown clockwise. This is for Quick Set models

For non quickset