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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsWatchBase is a searchable reference database for high-end mechanical watches and the calibers inside them. It can help collectors identify references, compare specifications, and investigate movement relationships. It is not a retailer, authentication service, valuation tool, or repair certification system.
The title’s “over 20,000 watches and 2,000 movements” figure is historical: WatchBase reported those numbers at its March 2018 launch. Its current DataFeed page reported 41,713 watches and 3,528 calibers at the time of research.
WatchBase is a searchable specialist database for high-end mechanical watches and the calibers inside them. It is useful when you want to look up a reference number, compare specifications across models, or understand the relationship between a watch and its movement. It is not a retailer, a review site, an authentication service, or a source of market valuations.
The title “over 20,000 watches and 2,000 movements” describes WatchBase at its launch in March 2018. WatchBase’s current DataFeed landing page reports 41,713 unique high-end watches and 3,528 calibers at the time of research. Those figures can change, and “calibers” should not automatically be treated as identical to “movements” in every database context.
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What is WatchBase?
WatchBase is an online watch database focused on high-end mechanical watches. Its public website can be browsed and searched without paying. The intended users include collectors, watch journalists, retailers, and trade professionals who need a more structured reference than a brand’s marketing page.
Its central strength is the connection between two types of records:
- Watch records: individual models or references, with specifications such as dimensions, materials, production years, case details, images, descriptions, and limited-edition information.
- Caliber records: information about the movement associated with a watch, including relevant movement properties and caliber relationships.
That relationship makes WatchBase more useful than a simple brand directory. A collector can start with a watch reference and investigate its specifications, or start with a caliber and find watches associated with it. The database is especially valuable when brand naming, movement naming, and reference numbers become difficult to follow across different sources.
Who created WatchBase?
Historical launch material says the project was founded in Amsterdam in 2015 by Alwin Hoogerdijk and Alon Ben Joseph. Hoogerdijk brought experience in database software and online database products. Ben Joseph brought professional experience from the jewelry and watch trade.
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Those backgrounds help explain WatchBase’s hybrid character: it combines structured-data and database expertise with watch-industry and collector knowledge. That is an explanation of the project’s stated origins, not evidence that every record has been independently audited or verified by an outside authority.
How WatchBase assembles its information
WatchBase’s 2018 launch announcement says its research draws on manufacturers’ websites, catalogs, books, press releases, and other relevant resources. It describes an editorial process in which information is edited to remove unnecessary marketing language, reduced to essential facts, and supplemented where needed before being presented in a consistent format.
This approach matters because watch specifications are often scattered across product pages, discontinued catalogs, press material, and specialist references. A consistent database layout makes comparisons easier. However, readers should distinguish three things:
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- The manufacturer’s stated specification.
- WatchBase’s organization and editorial presentation of that information.
- Any interpretation made by a writer, collector, or reviewer.
WatchBase’s published method does not establish that every entry is error-free, independently tested, or equivalent to an official manufacturer archive. For an expensive purchase, service decision, or disputed specification, confirm important details with the brand, an authorized service center, or a qualified watch professional.
What information can you find?
Depending on the record, WatchBase may provide:
- Model and reference information
- Brand and collection details
- Production years or an estimated production period
- Case diameter and other dimensions
- Case materials and construction details
- Images and written descriptions
- Limited-edition information
- Movement or caliber identification
- Properties associated with the movement
Not every record should be assumed to contain every field. Older, discontinued, unusual, or limited-production watches may have less complete documentation than current mainstream models. The database is best treated as a research starting point and cross-reference layer rather than an infallible specification sheet.
How to use WatchBase for watch research
1. Start with the most precise identifier you have
A reference number is usually the best starting point. If you do not have one, search by brand and model family. A caliber number can also be useful when you are investigating a movement rather than a particular watch.
2. Check the watch record, not just the model name
Model names can cover many generations, case sizes, materials, and complications. Compare the reference, dimensions, production period, and case details with the watch in front of you. A similar name does not necessarily mean the same watch.
3. Follow the caliber relationship
Once you identify the movement or caliber, use that information to understand which other watches may share it or be related to it. This can clarify movement naming and help separate a brand-specific designation from a movement family or underlying caliber.
4. Compare records carefully
WatchBase can help compare dimensions, materials, production years, limited-edition status, and movement details across models or brands. When comparing two watches, make sure you are comparing equivalent fields: case diameter is not the same as lug-to-lug length, and a movement family is not necessarily the same thing as a complete movement specification.
5. Verify details before spending money
Use the result to guide further research, not to certify a purchase. Confirm serial and reference details, originality, service history, condition, and provenance separately. Those issues are not established merely because a matching record exists in WatchBase.
Who benefits most from WatchBase?
| User | Useful application | Important boundary |
|---|---|---|
| Collectors | Checking references, dimensions, production periods, and caliber relationships | Do not treat an entry as proof of authenticity or condition |
| Buyers | Building a shortlist and comparing model families | It does not provide a reliable current market value or investment recommendation |
| Journalists and editors | Finding consistent technical background for articles | Paraphrase and verify important claims; do not reproduce large sections of the database |
| Retailers and marketplaces | Exploring structured catalog information | Bulk use requires an appropriate commercial data arrangement |
| Watch apps and collection tools | Investigating catalog enrichment and watch-caliber relationships | Licensing, fields, limits, and support must be confirmed directly |
How large is WatchBase now?
The “20,000 watches and 2,000 movements” wording comes from WatchBase’s March 1, 2018 launch announcement. At that point, the project reported more than 20,000 unique watches and more than 2,000 unique movements.
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The current DataFeed landing page gives a later scale indication: 41,713 unique high-end watches and 3,528 calibers at the time of research. This suggests substantial expansion since launch, but it should not be presented as a permanent catalog total. Database counts change as records are added, revised, merged, or categorized differently.
There is also a terminology issue. The historical announcement uses “movements,” while the current DataFeed page uses “calibers.” In watchmaking these terms are closely related, but they are not always interchangeable in a structured database. A caliber may identify a particular movement design or designation, while “movement” can be used more broadly. The safest wording is to report each source’s own terminology.
Free public search versus the paid DataFeed
For an individual collector, the important point is simple: WatchBase presents its public database as free to browse and search. You can use it as a lookup tool without buying a subscription merely to investigate a watch or caliber.
Businesses have a separate option. WatchBase offers a paid DataFeed/API or structured data feed for online stores, websites, and applications. This is aimed at organizations that need catalog information delivered in a reusable, structured format rather than manually looking up records one by one.
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- Enriching a watch retailer’s product catalog
- Adding technical data to a marketplace
- Building a watch collection or inventory application
- Supporting an editorial watch database
- Organizing records for an insurance or inventory system
- Providing watch and caliber information inside a mobile app
The DataFeed is a commercial relationship, not an ordinary consumer feature. Pricing, licensing terms, API limits, available fields, support, geographic availability, and eligibility should be confirmed with WatchBase before a business designs a product around it.
What WatchBase cannot tell you
WatchBase is a reference database, so it should not be used as a substitute for services that require physical inspection or specialist judgment. The researched material does not establish that WatchBase provides:
- Authentication or counterfeit detection
- Condition grading
- Current market valuation
- Investment advice
- Repair certification
- Confirmation that a particular watch is factory-original
- Confirmation that a particular example has been serviced correctly
A database match can tell you that a watch reference or caliber is documented. It cannot prove that the item offered by a seller is genuine, complete, original, or in the condition described. For high-value purchases, use an independent qualified watchmaker, an authorized service center, or a specialist authentication process as appropriate.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Can you copy WatchBase data?
WatchBase’s Terms of Use identify its watch and caliber records as protected database content. The terms prohibit substantial extraction and systematic reuse without prior written consent.
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For a normal editorial article, the responsible approach is to paraphrase information, identify the relevant WatchBase record where appropriate, and avoid reproducing large tables or systematically copying records. If you need bulk catalog information for a store, app, marketplace, or database, the DataFeed/API route is the appropriate conversation rather than scraping the public interface.
A useful companion for movement research
WatchBase is convenient for online lookups, but some readers will want a portable explanation of movement architecture, caliber families, terminology, and watchmaking history. A mechanical watch movements book can be a useful companion for that purpose. Choose the edition and level carefully: a beginner’s illustrated guide serves a different need from a technical reference aimed at watchmakers or advanced collectors.
That kind of book should complement WatchBase, not be presented as an official WatchBase product or endorsement. WatchBase is strongest for finding and cross-referencing records; a good horology reference can provide the broader mechanical and historical context behind the caliber names.
Final assessment
WatchBase is worth using if you want a focused research layer for high-end mechanical watches. Its public search makes it practical for collectors and enthusiasts, while its watch-to-caliber relationships are more useful than a basic list of brands and models. The historical launch numbers explain the original title, but the current published DataFeed count indicates that the database has grown considerably since 2018.
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Use it to identify and compare documented specifications. Do not use it as proof of authenticity, condition, value, or service quality. For businesses that need structured catalog data, the paid WatchBase DataFeed API is the relevant next step, subject to direct confirmation of commercial terms and licensing.
Frequently Asked Questions
Is WatchBase free to use?
Yes. WatchBase presents its public database as free to browse and search. Businesses that need structured catalog data can separately inquire about the paid DataFeed/API.
Does WatchBase authenticate watches?
No. A database record can help identify a reference or caliber, but it does not prove that a particular watch is genuine, original, correctly serviced, or in the stated condition.
Are there really more than 20,000 watches in WatchBase?
The original figure comes from WatchBase’s March 2018 launch announcement. Its current DataFeed landing page reported 41,713 watches and 3,528 calibers at the time of research, although those volatile figures may change.
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Yes, but the DataFeed/API is a separate commercial product intended for stores, websites, applications, marketplaces, and other businesses. Pricing and licensing details need to be confirmed directly with WatchBase.
The Bottom Line
Bottom line: WatchBase is a free public reference database for researching high-end mechanical watches and their calibers, with a separate paid data feed for businesses. It is excellent for structured cross-checking, but it is not an authentication, valuation, condition, or repair service.




