Seiko model number on face or on case back

Seiko model number on face or on case back serial number#
Seiko model number on face or on case back serial#
Seiko model number on face or on case back full#
Seiko model number on face or on case back series#

Model series included in the study cover the automatic 300 m models as well as the 'classic' 150 m divers (6217, 6105, 63). finder.htm This page is dedicated to my studies on production numbers and -timeframes of Seiko Vintage Dive watches. It does help to know a little about movement production dates when dating watches on the street but if you have a computer handy you can always drop by these fine websites: If you see a Zero it is a letter O for October N= Nov D= DecДЁDXXXX would be December 2008 8OXXXX would be October 2008 ДЄ note on months since only one numberis used for the months Oct / Nov / Dec being two numbers is noted by letter The key to the whole trick is knowing what movement is in side and older movement like the 6309 was made in the late 70's and 80's and so a watch with 86XXXX would be April 1988 and so on.

Seiko model number on face or on case back serial#

Most Seiko serial are 6 digits long and so a serial of 86XXXX would be a watch made in April of 2008 The second number in the Serial is the month the watch was made if you see a 4 it will be the month of April The first number in the Serial is the last number in the year of production, and so if it is a new watch and you see an 8 it should be the year 2008

Seiko model number on face or on case back serial number#

Push the crown back in.All Seiko's should have a Serial number on the case back Press the bottom chrono button to advance the hand to where you want it. Press the top chrono button again to switch to adjusting the big central seconds hand. Now use the bottom chrono button to advance the hand where you want it (holding the button will make the hand advance faster).

Seiko model number on face or on case back full#

Hold the top chronograph button for about 2 seconds until the stopwatch minute hand turns in a full circle. To reset the chronograph hands to 12:00 or zero on the dial, first pull the crown out to position 2 (2 clicks to time-setting mode).

There are two hands related to the chronograph function: The central 1/5 second hand and the stopwatch minute hand subdial. The size is SR927W which should convert to a 395 or 399 cell. The original battery in the watch was also made in Japan by Seiko. The time on your watch will maintain accuracy even in low battery mode. Low battery mode also prohibits the alarm from sounding off. There is also a low battery indicator which will cause the small second hand to jump every 2 seconds. Keep in mind that the battery will drain faster if you leave the chronograph second hand running вЂ“ specifically if the chrono is used for more than 2 hours per day or if the alarm rings more than 20 seconds per day. In the manual, Seiko claims that the battery should last approximately 3 years. Seiko claims that the caliber 7T62 will maintain accuracy of +/- 15 seconds per month at normal operating temperatures of about 41F to 95F. when you get the time you want, push the crown back in. To set the alarm, pull the crown to position 1 then press the bottom pusher to advance the alarm time. The alarm can be set to ring once in the next 12 hours. The 7T62 has an alarm function that doubles as a second time zone subdial. Long pressing will make the hand advance faster. To reset the central chronograph hand: pull the crown to position 2 and hold the bottom chrono pusher until the hand is at 12:00. This also allows this movement to measure 1/5 of a second when using the chronograph feature. The chrono hand on the 7T62 pulsates 5 times per second. The caliber 7T62 does not have an AC button or hole. You may see other collectors refer to the caliber 7T62 as an evolution of the original 7T32 quartz movement, however, keep in mind that one huge difference between the two movements is that after replacing the battery, the 7T32 required performing an AC (or all clear) reset by using a wire, tweezers, or a paperclip to touch the positive side of the installed battery with the AC contact (there will be a hole labeled вЂњACвЂќ with an arrow). The 7T92 has a 1/20 second chronograph that measures up to 12 hours. The big difference is that the 7T62 listed here has an alarm and a 1/5 second chronograph that measures up to 60 minutes. These two calibers are sometimes mixed up. The caliber 7T92 is another popular Seiko quartz chronograph movement. It may be possible to interchange these movements, but the height is slightly taller than the 7T62 ( see here). Learn more about Hattori/SII/TMI/Epson here. The YM62 is basically the same movement as the 7T62 except that it is sold to other watch companies and used in non-Seiko branded timepieces. You may also see a similar caliber known as the Hattori or SII YM62.