Seiko

Seiko identification typically requires 3 or 4 steps. We will use the watch I'm wearing today as our first sample.

Although I bought it new, earlier today I didn't know exactly how to label or identify it. I believe I have the box and papers, but I have too many Seikos, boxes, sets of papers and so on. I've had the watch for about 6-7 years, and can't find its original packaging. But I know its nickname is SAMURAI.

Searching the Internet is the fastest way to locate the details of your watch. You will need as much data as possible from the watch case back. Here's the Seiko support document to help you find the numbers.

After some research, I created this small table of data to show that data that you might assemble for any Seiko watch.

SEIKO WATCH IDENTIFICATION SEIKO MODEL CODES  on the hang tag or box (not found on the watch) SBDA001 (black ti), SBDA003 (blue ti) or SBDA005 (orange ti) SNM009 (white SS), SMN011 (black SS) SMNO15 (black SS pepsi bezel), SMNO17 (white SS pepsi bezel),  SMNO19 (yellow SS), SNM021K1 (orange SS), SNMO31 (white SS), SNM033 (black SS)   MARKINGS ON MY DIAL Japan 7S25-00C0 R 2   MARKINGS ON MY CASEBACK Titanium 7S25-00D0 AO A    SEIKO Air Diver's 200m    SERIAL NUMBER ON CASEBACK  410258   WATCH'S NICKNAME SAMURAI   DETAILS 40mm case, bracelet, 200m diver, knurled crown at 3, automatic, non-hacking movement. 7S26 or 7S36 movement; 21600 beat per hour, 41-50 hours reserve; 21-24 jewels. Produced in Japan or Malaysia Stainless have waffle dial, matching date wheel, matching bezel and red second hand. Titanium have larger, darker hands, crown guard, matte finish and bezel differences.

Setting and operating instructions for most Seiko watches can be found on the manufacturer's site "seikowatches.com" under "support".