An iPhone app to organize and document your watch collection
Organize watch details, verified calibers, photos, documents, values and service history privately on iPhone. Create cards, collections and PDF reports.
Read guide →H4icons editorial
Guides & Stories for Watch Collectors and Professionals
Practical knowledge, horological history and the engineering behind remarkable watches. Explore guides for documenting, protecting and presenting a collection, alongside stories about the people, machines and ideas that shaped watchmaking.
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Practical Guides
Practical resources for organizing, documenting, protecting and presenting a watch collection.
How to track watch maintenance dates and service history.
Learn which maintenance dates, service documents and condition details are useful to preserve for every watch in a collection.
Read guide →How to record and review watch collection values.
A practical explanation of acquisition cost, current valuation, supporting evidence and privacy when recording watch collection values.
Read guide →How to create watch cards for friends, collectors and social media.
Learn how to prepare polished watch cards for sharing one watch or a curated selection without exposing private collection records.
Read guide →How watch sellers can organize inventory and presentation cards.
A practical guide for watch sellers who need accessible watch records and consistent cards for clients, listings and social media.
Read guide →How to document a watch collection clearly and privately.
A practical method for documenting watch identity, photographs, ownership records, service history and private information.
Read guide →How to photograph watches for collection records.
Learn which watch photographs create a useful private record and how to capture consistent, legible images without hiding condition details.
Read guide →How to preserve watch provenance and supporting records.
Organize invoices, certificates, ownership history, service documents and accessories without making claims that the evidence cannot support.
Read guide →Watch Insurance Documentation: What Records to Keep
Organize watch photos, receipts and valuation records. A practical checklist to prepare your collection documents and discuss requirements with your insurer.
Read guide →Watch Collection Spreadsheet: Guide & Free Template
Organize watches with a free Excel template for inventory, values, service records and documents. Keep currencies separate and preserve your history.
Read guide →Watch Collection App vs Spreadsheet: How to Choose
Compare a spreadsheet and a watch collection app for records, photos and sharing. Choose based on your routine, privacy and collection needs.
Read guide →What Information Should You Record for Every Watch in Your Collection?
A practical checklist of the details, photographs, documents, values and service records worth keeping for every watch in a collection.
Read guide →How to Record Watch Movements and Calibres
Learn how to identify and document a watch movement, calibre, frequency, power reserve and complications without confusing references or variants.
Read guide →Story
Stories & Watchmaking
Stories about the people, inventions, movements and engineering that shaped the way we measure time.
John Harrison and H4: The Machine That Turned Time into a Coordinate
In the eighteenth century, a ship could work out with reasonable confidence how far north or south it had sailed. The frightening part was not knowing how far east or west it had drifted. Solving that problem would require an English carpenter to build one of the most remarkable timekeepers ever made.
12 min read · Read story →
The Letter That Made Seiko Build a Watch for the Abyss
The Seiko “Tuna” did not come out of a marketing workshop or a nostalgic revival. It began with a complaint from a professional diver who needed his watch to keep working where ordinary watches stopped being tools.
3 min read · Read story →
Two Hundred Watches Out a Window: How G-SHOCK Was Born
Before it became a culture, a design language and a watch sold by the millions, G-SHOCK began with an almost childlike question: why should a watch have to break when you drop it?
3 min read · Read story →
Royal Oak: The Famous Failure That Never Happened
For decades, one version of the Royal Oak story has been almost too good to resist: Audemars Piguet launched an oversized, outrageously expensive steel sports watch in 1972, nobody wanted it, and only years later did the world catch up. The company’s own archives tell a more interesting story.
3 min read · Read story →
The Watch That Crossed the Atlantic Twice with Amelia Earhart
Amelia Earhart’s 1937 disappearance is such a powerful story that it tends to swallow everything that came before it. Yet years before that final flight, a Longines chronograph had already accompanied two defining Atlantic crossings — two moments that helped turn Earhart into one of aviation’s most recognisable figures.
3 min read · Read story →