Unable to tighten winder to secure position,JUST KEEPS ON TURNING. Does this nt make the watch water resistant

To set a basic wristwatch, simply pull the crown (the winder button at the 3:00 position on 99% of watches) out gently - it will click into adjusting position. Wind to send time and then push back in again.

Variations on this are: If you have a watch with date display, the crown will have 2 positions, the first click will be to set the date and the second click (fully out) is to set time. If you need to adjust the date, I suggest you wind the date to the day before you need and then use the second click to wind the hands to the correct date. This way you will be able to know if you have the hour at a.m or p.m position and avoid it have the date changing during the day instead of at night.

One last variation for wristwatches is a screw down crown. Some water resistant and sports models incorporate an added feature whereby the crown is threaded so it can be tightened down to avoid water entering - the most common place water gets into a watch! If you have one of these, you simply need to screw the crown anticlockwise until it pops out and then refer to the instructions above. Don't forget to push and screw the crown back in clockwise when you are done

To set a basic wristwatch, simply pull the crown (the winder button at the 3:00 position on 99% of watches) out gently - it will click into adjusting position. Wind to send time and then push back in again.

Variations on this are: If you have a watch with date display, the crown will have 2 positions, the first click will be to set the date and the second click (fully out) is to set time. If you need to adjust the date, I suggest you wind the date to the day before you need and then use the second click to wind the hands to the correct date. This way you will be able to know if you have the hour at a.m or p.m position and avoid it have the date changing during the day instead of at night.

One last variation for wristwatches is a screw down crown. Some water resistant and sports models incorporate an added feature whereby the crown is threaded so it can be tightened down to avoid water entering - the most common place water gets into a watch! If you have one of these, you simply need to screw the crown anticlockwise until it pops out and then refer to the instructions above. Don't forget to push and screw the crown back in clockwise when you are done

The watch should start when the winder is returned home position.

If pressing the winder does not cause the watch to start it could be that the winder may need to be screwed in (some watches include this as an additional feature to improve water resistance). Turn the winder to the right.

The wacth should now start. if it still does not start, I suggest you find your nearest dealer in your area and speak to them about it.

( You can find your nearest dealer at http://www.tagheuer.com/tools/sitemap/index.lbl?lang=en ).

Some winders need to be unscrewed (its a water resistance feature).

Try turning the winder anticlockwise about a quarter of a turn or so.

(Don't forget to screw it back in when you have finished!)

I was unable to find any instructions on the Luminox web site but I suggest you try the following:

Screw the winder anticlockwise ( to release it) and the pull the winder out. I would expect to find two "out" positions, one for the time and one for the date setting.

After setting the watch push the winder home and screw it back in.

I would expect that pulling out the winder and turning it will move the hands.

If it will not pull out, it could be that the winder screws in for security. Try turning the winder anticlockwise and the pulling it out.

The stem (or crown) is sometimes screwed in to improve the water resistance of the watch. Try turning the crown anticlockwise before pulling it out.

It may be necessary to take the hour hand past midnight to get the date to change. This will be the case if there is only one "out" position.

If there are two "out" positions then one will be for the date and one for the time.

The usual way to adjust time and date is to screw out (not pull) the winder and rotate it backwards or forwards. The winder will have two "out"positions, one for the date and the other for the time. (the "screw" for the winder is to improve water resistance).

If you have already tried this and it does not work, then go to the Tissot web site "tissot.com", locate your nearest dealer and ask for advice.

Alternatively on the Tissot site find your watch under the heading "sport". To view all the watches in a section move your cursor along the dots, this moves the images along to find the one you want.

Select the PRC100 and details of your watch appear and at the bottom of the menu on the left hand side select "user manuals".

Click on "download" on the right and instructions will appear

Try this solution I posted earlier for a similar problem.
Put stem into "set hands" position and adjust hands to the 12:00 position. Day and date should advance at or close to that time.
If you pass 12:00 and there's no change continue rotating another 12 hours (to twelve o'clock again) and they should advance. Once you've found that there's midnight.So say it's now 4:00pm you would need to rotate the hands around the dial again so they pass 12:00 once more (12:00 midday) then four hours more to 4:00.
To set the day/date you can set the crown (winder) to the first position (second posn is "set hands) and rotate winder
eithr clockwise or anticlockwise. Once you discover which direction advances the date and day ring just set it to the correct day/language and date you want then press the crown home.
Hope this solves your problem.

Usually to change the date you need to have the crown pulled out to a position that is between the "closed" position and the position where it will move the minute/second hands.