How do I reset the time on my Jessica Carlyle Rhinestone Flower watch

HELLO Marijane,

To get the BACK... back on you will likely need a press.

The back opener for snap back watches

(my opinion) can be seen on eBay at
https://www.ebay.com/itm/Watch-Back-Cover-Case-Opener-Remover-Battery-Change-Watchmaker-Repair-Tool-Kit/292319457729?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649


A jewelers loupe ( about 10x power) will help you fond the precise spot to leverage.

Your GOAL is to open the case leaving the LEAST amount of
tool marks. Every time the case is touched,,, it leaves a mark.

THE reason I got into doing watches myself...
huge scratches left by a "PROFESSIONAL".

~~

I suspect you should also (very likely) need a set of jewelers screwdrivers...

All abundantly available on eBay.

Happy hunting!

for you , the quickest and easiest way would be to take it to a jeweller and have it replaced
time taken around 5 minutes

Jessica, 1. From Time Telling Mode, press and hold 'D'. Press 'B' simultaneously to select either 12 Hour or 24 Hour (Military) Time. NOTE: 'A' indicates 12 Hour Time is selected. 2. Release 'D' to return to Time Telling Mode.
Try the links for manual on this watch.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

http://fitness.manualsonline.com/manuals/mfg/armitron/wr_165.html

http://www.angelar.com/~jeremy/ArmitronLadiesDigital.pdf

There is probably a screw that is lose on the watch. Someone will need to pop open the caseback and make sure the screws are in place. If you or someone can't figure it out I suggest taking it to a watch repair person, do not go to a high end place they will charge more then what the watch is worth. Go to watch repair shop , and if they charge more then $10.00 then it's better just to buy a new watch on ebay.

How to change battery on Jessica coxlye leather brand watch and what battery does it take

No, this will not be covered on the warranty. You have to visit your nearest watch repair shop or jeweller and ask to fit a new stone. It is easy job and shouldn't cost too much.