Can you tell me what year is my watch model 48613181?

Sorry no. Ask the manufacturer.

This is the serial number. It tells you that the watch was manufactured in April of the first year of a decade (e.g. 1991. 2001, 2011 etc). If it's a quartz watch, it's probably one of the example years shown.

This model Rolex has been manufactured over multiple years, and it is not possible to date your watch based purely on is model number. However, it is possible to date most Rolexes based on their serial numbers, which can be found stamped between the lower lugs (i.e., the lugs below 6:00 on the watch dial). You will need to remove the band from these lugs to read the serial number.

Dating the watch case of a Rolex does not necessarily date the entire watch. It is possible that a movement from another watch was placed into a watch case that is younger or older than the the movement. Like Rolex watch cases, Rolex movements can also be dated by their serial numbers, if this is a concern you have about this particular watch.

This jeweler has put together a nice summary of when Rolex watch models were introduced and which serial numbers are associated with specific years of manufacture. Once you have found your serial number, this should help you date your watch. I have no connection (financial or otherwise) with this web site, but I found the information useful and presented in an easy to understand way.

http://www.bgrayjewelers.com/rolex_information.htm

We cannot tell you from the serial number what the model watch you bought is . But you can call Citizen watch 800 321 1023 extension 4234 and give them the serial and they will be able to tell you the model and year the watch was produced.

1965 theres a full breitling serial number list at http://www.brittons-watches.co.uk/watches_breitling_dates.htm

Look for detail tech manuals for all types here: http://www.citizenwatch.com/downloads/tech/tech.htm

i hope this helps....
the top right says st/stp....tells you the year
the bottom right is the light...
the top left is the reset....
and the bottom left is mode...alarm, stop watch,and time 2

you can go to this link and in the upper right corner type in the model number not the module number (there are instructions for finding the model number if you don't know it) I found a band for a watch that is over 8 years old on here.
http://www.fsiwebs.com/shopcart3/SC_ProdList.asp?