How to put back the back cover of caio watch MTP-2144

Question edited for clarity.
Question moved to Casio Watch, from Office Equipment.

Pressure backs need a tool to unscrew the back and the gasket should be checked and greased. Best advice here

https://www.fixya.com/support/r27181038-changing_watch_batteries

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This is the MTP-V006L-7B watch ... hopefully yours is similar
It takes a SR626SW battery which is also goes by 377

go to this link to download manual
http://support.casio.com/en/manual/manuallist.php?cid=009http://support.casio.com/en/manual/manuallist.php?cid=009

go here > http://www.pmwf.com/Watches/QuartzWatchesAndBatteries.htm

If the watch back has about 10 groves on it take it to a watch repairer.NO groves then a sharp knife like a small Pearing knife find the grove between watch and cover put knife in and gently prize open.

Follow this link:http://www.invictawatch.com/ Hover over the COLLECTIONS tab and click on INSTRUCTION MANUAL. There you will see RONDA and MIYOTA movement tabs. Those are two manufacturers of watch movements used to produce all INVICTA watches. RONDA is Swiss company and MIYOTA is Japanese. Check out both to find an exact match to your particular watch.Unfortunately that is all Invicta can offer. Rate me please.

www.technomarine.com

Jewel

mcdevito75 here, Your Timex watch back cover should have a cutout in the back cover for the stem (winder) make sure this cutout is lined up with the stem the stem lies in this cutout, once you have it lined up, lay the watch down, crystal (glass up on a sturdy surface, Table, counter top etc. Now, with your palm and even, even pressure on the crystal (glass) simply press down, you"ll hare it click shut. Don"t force anything and if you still can"t get your watch back cover on, look for a small watch repair shop in your arear. It may take a special pair of pliers to get the cover on. Most Timex back covers are kind of hard to get back on.

Do you mean "Casio" rather than "caio"?

If you do, then put "Casio.com" into your search engine and one option that turns up is the Casio instructions site.

Enter your watch number and download the instructions.

1)put a little silicon grease around the case cover 2)put cover back on the case 3)lay the watch on a hard surface spicifically on the edge of a wooden chair or bench and the face of the watch on your palm, the case cover is under and paded on the chair or bench. 4) now gently press the watch and it will snap.