Cro WatchesVintage Seiko, explained
Free guides from the watches we buy and check every day: how to date a Seiko, set it, which movement it has, what it is worth, and how to tell an original dial from a replacement.
Seiko Identifier: what is my Seiko, and is it original?
Free Seiko identifier: upload photos or type the caseback and dial numbers to get the model, movement, production date, original Seiko catalogue entry and an originality check.
Buying guideVintage Seiko buying guide: 10 checks before you buy
How to buy a vintage Seiko without regrets: caseback and dial codes, redials and replacement dials, movement, crystal, bracelet, serial dates and fair prices. The checks we use on every watch.
PricesHow much is a vintage Seiko 5 worth? 2026 price guide
What vintage and neo-vintage Seiko 5 watches really sell for in Europe in 2026: 7009, 6309, 7S26, square cases, Lord Matic and Arabic dials, and what pushes the price up or down.
How toHow to set the day and date on a vintage Seiko 5
Step-by-step: how to set the time, day and date on Seiko 5 watches with 6309, 7009, 7S26 and 7S36 movements, which type of crown your watch has, and the hours when you should never change the date.
How toHow to wind a Seiko 5 automatic (and why it stops)
Seiko 5 watches with 6309, 7009, 7S26 and 7S36 movements can't be wound with the crown. How to start one, how long it runs off the wrist, and what to do when it keeps stopping.
DialsSeiko Arabic dial watches: how to read Eastern Arabic numerals
The Seiko 5 with Eastern Arabic (Hindi) numerals: how to read the dial, where the style comes from, original vs replacement dials, Arabic day wheels and what these watches sell for.
MovementsSeiko 6309 guide: the movement behind the Turtle and the Seiko 5
Everything about the Seiko 6309 automatic: specs, years, the famous 6309-7040 Turtle diver, 6309 Seiko 5 references, how to set it, common faults and what 6309 watches are worth.
MovementsSeiko 7009 guide: the classic everyday Seiko 5
The Seiko 7009 automatic explained: specs, years, typical references like 7009-8760 and 7009-876A, how to set the day and date, what goes wrong and what a 7009 Seiko 5 is worth.
MovementsSeiko 7S26 guide: the neo-vintage Seiko 5 (vs 7S36, 4R36, NH36)
The Seiko 7S26 explained: specs, accuracy, the SNK and SKX watches it powered, how it differs from the 7S36, 4R36 and NH36, how to set it and why neo-vintage 7S26 Seiko 5s are great daily watches.
CareHow to look after a vintage Seiko: water, magnets, servicing
Simple care for a vintage Seiko automatic: is it water resistant, what to do if it runs fast (magnetism), how often to service it and what a service costs, cleaning the bracelet and storing it.
MovementsSeiko 5 movements explained: 6309, 7009, 7S26 and 7S36
The four automatic movements behind most vintage and neo-vintage Seiko 5 watches: 6309, 7009, 7S26 and 7S36. Jewels, years, features and how to tell them apart.
Free toolIs my Seiko running right? Accuracy checker and fixes
Free Seiko accuracy checker: work out how many seconds per day your automatic gains or loses, what is normal, why a Seiko stops, and how to wind it and set the date safely.
Seiko detailsWhy does my Seiko say 水? Seiko day wheels in kanji, Arabic and Spanish
Seiko day-date watches were sold with day wheels in many languages: Japanese kanji, Arabic, Spanish and more. How to read them and how to switch language.
Know before you buyOriginal, refinished or replacement? How to check a Seiko dial
How to tell an original vintage Seiko dial from a redial or a replacement: dial codes, print quality, lume and wear. The checks we use on every watch.
Buyer's guideSeiko Lord Matic (LM) 5606: a buyer's guide
Seiko Lord Matic 5606 buying guide: what makes the LM special, kanji day wheels, what to check before you buy, and what they sell for in Europe.
Free toolHow to date a Seiko from its serial number
Free Seiko serial number decoder: find the production month and year of your vintage Seiko from the caseback, with the movement years that decide the decade.