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  2. What Is a Chronograph? How to Use One

What Is a Chronograph? How to Use One

A chronograph is a watch with a stopwatch built in. Here is what each pusher and subdial does, how to read a tachymeter, and the habits that keep the mechanism happy.

By Michael Chen

Watch 101 and Brands Editor

October 9, 2026·6 min read

Prices checked October 9, 2026Compared across brandsHow we choose

Close up of a pale grey dial with a thirty minute subdial
A subdial that counts the elapsed minutes

Put simply, a chronograph is a watch with a stopwatch built into it. The ordinary hands keep telling the time while a separate set of hands, started and stopped with buttons on the side of the case, measures how long something takes. The word comes from the Greek for "time writer", a leftover from the nineteenth century instruments that marked elapsed time with a dot of ink. Today it is the most popular complication in watchmaking after the date, and it accounts for a large share of the busy, sporty dials you see in any watch shop.

It also confuses people, because a chronograph dial carries more hands and scales than it seems to need. Once you know which hand belongs to which job, it becomes one of the most useful things a watch can do.

What are the parts of a chronograph?

Almost every chronograph, from a drugstore quartz model to a five figure mechanical one, shares the same basic controls. Learn them once and you can pick up nearly any example and use it.

PartUsual positionWhat it does
Start and stop pusherAbove the crown, at 2 o'clockStarts the stopwatch, stops it, and on most watches starts it again from where it paused
Reset pusherBelow the crown, at 4 o'clockReturns every stopwatch hand to zero once the chronograph is stopped
Central seconds handFrom the middle of the dialOn a chronograph, usually the stopwatch seconds, not the running seconds
Minute counterA subdial, often at 3 or 12Counts elapsed minutes, typically up to 30
Hour counterA subdial, often at 6Counts elapsed hours, typically up to 12
Running secondsA subdial, often at 9The watch's ordinary seconds, always ticking
TachymeterPrinted on the bezel or dial edgeConverts a timed distance into an average speed

Positions vary by movement; the instruction sheet for your watch is the final word.

The detail that trips most new owners is the big central hand. On a three hand watch it sweeps constantly. On a chronograph it usually sits still at twelve until you press start, and the small subdial at nine is the one showing that the watch is running. People regularly assume a new chronograph is broken for exactly this reason.

Price tracker · prices checked October 9, 2026

Price history: Vantage

What one watch has cost over time, listed and per watch while the store ran its offer.

How do you use a chronograph?

The routine takes about ten seconds to learn:

  1. Check the hands are at zero. If the stopwatch hands are not all pointing at twelve, press the reset pusher.
  2. Press the top pusher to start. The central hand begins to sweep.
  3. Press the top pusher again to stop. Read seconds from the central hand, minutes and hours from the counters.
  4. Press it a third time to continue, if you want to add another period to the total, for example timing only the moving parts of a journey.
  5. Press the bottom pusher to reset, only once the chronograph has been stopped.

That last point matters most on mechanical watches. Pressing reset while the stopwatch is running asks the hammers that zero the hands to fight a moving wheel. Some movements are designed to tolerate it, many are not, and a repair costs more than the habit of stopping first.

Everyday uses

Nobody needs a chronograph, which is part of the charm, but once you have one it finds jobs: parking meters, steeping tea, the length of a run, a presentation you were told to keep under twenty minutes, the time a child spends brushing their teeth. A rotating bezel does some of the same work, which we explain in what a dive bezel is for, but the chronograph is more precise and starts with one press.

How does a tachymeter work?

The tachymeter is the scale of numbers running around the edge of a racing chronograph, usually starting near 400 or 500 at the top and falling toward 60. It turns time into speed over a known distance of one unit, whether that is a mile or a kilometer.

Start the chronograph as you pass a marker, stop it at the next one, and read the number the central hand points to on the scale. If a mile took 45 seconds, the hand points to 80, so you averaged 80 miles an hour. The scale is simply 3,600 divided by the elapsed seconds, printed in advance so you never do the arithmetic. It also works for production rates: time how long one unit takes and the scale gives you units per hour.

The limit is that the scale only covers events between roughly seven seconds and a minute. Anything slower than 60 units an hour runs off the end. That is why the tachymeter is more of a design signature than a daily tool, and why it defines the look we cover in our guide to racing chronographs.

A chronograph with a blue bezel ring and white dial worn by a driver with a hand on the steering wheel
The driving connection is where the chronograph look comes from: the Lucky Fours Chronometer behind the wheel

Quartz or mechanical chronograph?

Both do the same job; they get there differently.

A quartz chronograph uses small motors to drive the stopwatch hands. It is cheap to make, accurate, and thin enough to wear every day. The trade off is battery life, since every second the stopwatch runs costs a little power, and the hands can drift from zero after a hard knock, which a reset procedure fixes.

A mechanical chronograph adds dozens of parts to an already complex movement: a column wheel or cam that coordinates start, stop and reset, a clutch that connects the stopwatch to the running train, and the hammers that snap the hands back to zero. It is beautiful to watch through a display back and expensive to build, which is why the cheapest well known mechanical chronographs sit far above the quartz ones in price. If you are unsure which movement fits how you wear a watch, read quartz vs automatic first.

Other names you will see

What to check when you buy one

At budget prices there is a real distinction between a working chronograph and a chronograph look. Some inexpensive watches carry printed or decorative subdials that show the day, the date or a 24 hour scale instead of elapsed time, and the pushers on a few are dummies. Before you buy any chronograph under a few hundred dollars, read the listing for the word "stopwatch" or a description of what each subdial does, and look at the product photos for where the hands point.

Among the established brands, the Casio Edifice Chronograph at $165 is a full quartz chronograph from a maker with a long record in the category, and the Citizen Promaster Dive Chronograph at $440 pairs a chronograph with a light powered movement. If what you want is the racing look on the wrist, a panda dial, a black tachymeter bezel and a steel bracelet, the Lucky Fours Vantage delivers that layout for less, and the Chronometer swaps the black bezel for a blue ring around a white dial.

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For the full field, from under $100 to the first serious mechanical pieces, our guide to the best affordable chronographs sorts them by budget and by what each one actually times.

Frequently Asked Questions

What is the difference between a chronograph and a chronometer?

A chronograph is a stopwatch function. A chronometer is a watch whose movement has passed a formal precision certification. A watch can be one, both or neither, and some brands use either word simply as a model name, so read the specifications rather than the dial.

Does using the chronograph drain a quartz watch battery?

Yes. Running the stopwatch powers extra hands, so a quartz chronograph left running all the time will need a new battery sooner. See how long a watch battery lasts.

Why do my chronograph hands not return to zero?

After a knock or a battery change, a quartz chronograph can lose its zero position. Most have a reset procedure using the crown and pushers; the exact steps differ by movement, so follow the instruction sheet for your watch.

Can I leave a mechanical chronograph running?

On most modern movements it does no harm, but it does use some of the power reserve. Older and cheaper designs wear faster when run constantly, so many owners only start it when they need it.

About the Author

Michael Chen

Michael Chen covers automatic watches, watch brands and Watch 101 for WatchesUnder: how movements work, how to size and care for a watch, and how the affordable brands compare. Prices in his guides are checked against each brand's own website.

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