Tissot prs200 hi,i have a prs200 i like to know what the sub dile on the left is for and do use it

You will need to go to several watch repair places to get estimates.

I need one link for my watch that was given by my daugther its tissot diamond t shape stainless steel case,mop dial

If you have tool and do it at home, it costs you about $4.00 for the new battery bought from Wal-mart. You have to open the watch's back to see the battery type (for example Renata or Maxell or Varta, etc. together with a 3-digit number) then go to Wal-mart or somewhere else to buy a replacement.
If you can't do that by yourself or don't want to get some scratches on your watch, bring it to your local watches/jewelry store. ( I have paid for that small job $16.00 plus taxes.)

Two of the spring-bars broke on the clasp of my PRS200, so I took it to an un-named watch repair shop that was closer than the Tissot-authorized store (Leslie Gold Watch Co.) at which I bought the item 5 years prior. After the repair, the clasp kept popping off, so I took it to the Tissot store, and they told me that it was because the ends of the bars didn't fit properly. They replaced the faulty bars for me at no cost, and the watch has been sitting on my wrist fine for the last year-and-a-half.

Even the best watches need servicing time after time. Obviously there is no battery fault, but something related to mechanics or electronics in your watch. Get advice from watch repairer.

mcdevito75 here, Best Bet look for a small watch repair shop in your area to save money on cost. You"d need a special tool called a link remover tool available on ebay but you can also wind up destroying the band, and a tissot band is expensive, let the shop remove the links.

The battery for a Tissot PRS200 is a "RENATA SR936SW (394)" & all you need to replace it is watch back wrench about £4 (ebay), dot listen to the jeweler trying to bill £45 its an easy 5min job

The ones associated with the little circles? One dial is for seconds, one for minutes, and one for hours. The seconds one should be applicable for time. The minute and hour, along with the big seconds hand that is centre mounted are for the chronograph function.

I also own a PRS200. The two buttons on the right and top two subdials are for the chronometer function.

The top right button starts and stops the chronometer function: First press starts the chrono. Second press freezes/stops it, so you can record your time. Third press resets the chrono.

The bottom button is for the lap function: on the first press, it freezes the chrono in order for you to be able to record your "lap time", but keeps the chrono running in the background (you don't see this, it's the movement that does this mechanically). When you press it a second time, it jumps back to the running chrono time. You can then press it again to get another lap time, and so on...

In chrono mode, the top right subdial shows the milliseconds, the second hand shows the seconds, and the top left subdial shows the minutes (up to 30 minutes).

The owners manual mentions how to fix this but the instructions are not 100% clear. You can download the PRS200 manual here:
http://www.tissot.ch/data/usersmanual/134-en.pdf

Each of the 3 chrono hands are reset separately. Unscrew the crown and pull it all the way out (2 stops out). Press button A (top right) as many times as necessary until the hand is on the 30. Each press moves the hand one tick so you may need to press it several times.

Next push in the crown one click.
Press button B (bottom right) as many times as necessary to advance the 60 second hand to 12'oclock.
Press button A to advance the 1/10th hand to 0.

The part I did not get at first is the fact that you need to press the A and B buttons several times to advance each hand 1 tick at a time until they are all pointing to 12'oclock.