Watch mechanisms, explained in 3D

See what happens inside a watch.

Short reels that take a watch apart and build it back up, one gear at a time. Every part meshes the way it would in a real movement: no faked connections, no hand-waving.

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New reels
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Latest reels

One question, answered in under a minute.

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Nº 06 · Explainer

How to use a tachymeter

Time one kilometre, or one box off a line, and the ring tells you how many an hour.

Nº 05 · Explainer

Why some dive watches have a helium valve

Saturation divers live under pressure for weeks, and helium creeps into their watches. That little valve at ten lets it out.

Nº 04 · Build

The GMT watch

A red 24-hour train keeps home time; a jumping hour hand clicks to local time.

Nº 03 · Explainer

How to read a chronograph

Start, stop, read the minutes then the seconds, back to zero: the stopwatch from part 2, explained in under a minute.

The reels

Three kinds of reel, four a week.

Every reel is short, in 3D and answers one thing. Here's what each kind does and when it comes out.

Wednesdays

Build

We take our base movement and add one complication to it, part by part: first why it's useful, then the two or three parts that make it work, built and running in front of you.

For example: the GMT, which keeps two time zones at once.

Mondays and Sundays

Explainer

One question about a watch you might own, answered in under a minute: what a part is for, or how to read and use it. Often with a challenge to test yourself.

For example: how to use a tachymeter, or why some dive watches have a helium valve.

Fridays

Watch Story

The true story behind a famous watch moment: who wore it, what happened, and what the watch actually did.

For example: the watch that helped bring Apollo 13 home.

  1. Mon Explainer
  2. Tue –
  3. Wed Build
  4. Thu –
  5. Fri Watch Story
  6. Sat –
  7. Sun Explainer

New reels go out at 08:30 New York time on Instagram, TikTok and YouTube Shorts.

For brands and makers

Want your mechanism explained?

We're building an audience of people who want to know how watches work. If you make or sell watches, or work with them in any way, and you'd like to talk, get in touch.

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