It’s a watch winder btw.
Are you sure it’s not a quartz watch? Could be a dead battery, as a mechanical chronograph in most cases will be over $1000.. Not familiar with this brand or model.
If it is a mechanical movement, and does not have a screw down crown, push the crown all the way in, and then you should be able to wind the crown towards the 12 o clock position about 10 - 20 times to get it running.
If it’s a screw down crown you need to unscrew it into the first click position, and then wind towards the 12 o clock.
It is also possible that it is mechanical but does not feature hand winding, so the watch winder would come in play or simply wearing it on your wrist for a few minutes with natural body movements should wind it enough to start running provided you are not stationary.
The two pushers are to stop / start the chronograph function of the watch.
If you are sure it’s not a quartz movement and it still will not run after winding up, pull the crown out to “stop” the watch and you will have to take it to a trusted watch maker to check it out.