- Seiko Watch Serial Number Search
- Seiko Watch Serial Number Lookup
- Seiko Serial Number Chart
- Seiko Watch Serial Numbers Reference Number
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Choosing the right watch battery is essential when you need a replacement. If you've got the original battery that needs to be replaced, then the process is very simple. If you don't, you may have to take a trip to the jeweler. Watch batteries are defined by a set of codes and standards. Varying combinations of these numbers will identify the appropriate watch battery for your time piece, as well as compatible models.
- Original Seiko ® Watch Bands come in a variety of styles and models. We carry a selection of rubber Sieko watch straps for the Honda Sportura Models as well as for the Pro Diver options. Seiko bands are also available in Nylon- these models have a few color options including tan, navy, black, and army green.
- You can sort the designs of Seiko watches and narrow them further using the movement number and the various serial number portions. The last four digits represent the model number you are looking for. Write out the entire serial number and the breakdown of its components for future reference and add it.
- The current Seiko Five Sports models have a new format to their serial numbers. This changes the system that has been in use at Seiko since the mid-1960’s and it will make dating and identifying these models more difficult in the future.
- You can sort the designs of Seiko watches and narrow them further using the movement number and the various serial number portions. The last four digits represent the model number you are looking for. Write out the entire serial number and the breakdown of its components for future reference and add it to your collection.
Turn the watch upside down and use a screwdriver to pop off the back plate. There should be a notch that will accommodate the end of the screwdriver; just slide the end underneath and gently pop off the back. In some cases, there will be small screws that need to be removed, which you can do with a jewelry screwdriver.
Find the battery in the back of the timepiece. It's a very small, silver disc that should have engraved numbers on it. Use the tweezers to pop this out of the back and lay it down on a table with the numbers facing up. You may need a magnifying glass to see all the engraving.
Write down the information on the back of the battery. As an example, it might say something like this: SR626SW. It may also have the name of the watchmaker and the country where the piece was made.
Compare these numbers to a cross-reference chart to discover the battery you'll need to purchase for your watch. When you compare the number in our example, SR626SW, to the chart, you'll find the following: The International Electrotechnical Commission code for this battery is SR66; Energizer, Rayovac, Renata, and UCAR all make a compatible battery and its code is 377; and Maxell, National, Panasonic, Sony, and Toshiba sell the exact code as SR626SW. Some manufacturers also have their own brands that fit their watches taking an SR626SW. Bulova's version is a 606, Citizen's version is 280-39, Duracell's is D377, Seiko's is SB-AW, Timex's is BA, and Varta's is V377.
Decide where you want to buy your battery by comparing the prices of the compatible models. If you want to purchase the brand specific for your watch, then locate the brand at the top, scroll down to the SR626SW and write down the brand specific code for the battery you want.
Order online or take your code to a jeweler and tell him which battery you want. As insurance, consider taking the original battery with you in case you've used an outdated chart. Replace the battery and pop the back of the timepiece back on.
Tips
- If you've lost the original battery, take the watch to a jeweler or horologist to see if they can identify your need. The specifics are not written on the inside of the watch, only on the battery.
'When was my Seiko made?' We hear that a lot here at WatchSleuth so we built this page to help you figure it out.The page includes a calculator along with instructions and example images to help you find the movement caliber, case code and serial number on the back of your watch.The calculator uses these codes to do its magic.
Your results will be shown here.If you don't know how to find these numbers on your watch please read our instructions below.
You can also view the entire datefinder database. We encourage people to send us additions and corrections. Dienstglas 6x30 ddx serial numbers.
Example #1
6119-8083 | 061187
Mvmt-Case | Serial
Finding the Model and Serial Number
Most Seikos have a 'retail' model number that is displayed in the store but not written anywhere on the watch.They also have a 'reference' model number that is written on the case back.This reference model number is a combination of two numbers:
- movement caliber
- case code
The other number you will need is the serial number.This is also on the case back and is six digits long.In the example images the serial number is highlighted in blue.Every watch has a unique combination of reference model number plus serial number.
Example #2
6309-576A | 2D5822
Mvmt-Case | Serial
How is the Date Calculated
The first digit of the serial number tells you the last digit of the year the watch was made.Looking at the example images:
- for example #1 the year ends in 0
- for example #2 the year ends in 2
- for example #3 the year ends in 4
Using this additional information we can update our three examples:
- the 6119 was first made in 1970 so #1 is from 1970 or 1980
- the 6309 was made from 1976 to 1987 so #2 is from 1982
- the 7S36 was first made in 1996 so #3 is from 2004 or 2014
The second digit of the serial number is also useful. It tells you the month the watch was manufactured.Here are the possible values:
- 1 = January
2 = February
3 = March
4 = April
5 = May
6 = June
7 = July
8 = August
9 = September
0 = October
N = November
D = December
The remaining four digits of the serial number indicate the production number for the watch.If your last for digits are 0000 then you have the first watch made for that model reference number.Returning to our examples and using the second digit from the serial number we get the following production dates:
- The 6119-8083 061187 was made in June of 1970/1980
- The 6309-576A 2D5822 was made in December of 1982
- The 7S36-03J0 411082 was made in January of 2014
Seiko Watch Serial Number Search
I know example #3 was not made in 2004 since I bought it new in 2014.
Example #3
7S36-03J0 | 411082
Mvmt-Case | Serial
Why Do We Ask for the Case Code
Seiko Watch Serial Number Lookup
If you were paying close attention you may have noticed we asked for the case code in the form above but we did not mention using it when calculating the date. You can leave that field blank and still findthe date for your watch however if you complete the field we will provide a listing of watches from our Seiko catalogsthat match the movement and case code.
Seiko Serial Number Chart
Special Thanks
Seiko Watch Serial Numbers Reference Number
What you see here is in large part thanks to this excellent Quartzimodo article How to tell when you Seiko watch was made.Unfortunately the Jayhawk Production Date Calculator (by John Gauch) which is linked to in the Quartzimodo article no longer seems to be available, so we built our own.Another useful resource we found during our research was The Seiko Manufacture Date Decoder on the Retro Seiko website.It does not seem to be as well known and we hope that our movement database is more completeand that our instructions are more helpful.As with any part of WatchSleuth we encourage people to contact us with suggestions, corrections or any other information that would make our site more useful.