How to Calibrate a Chronograph Watch?
To calibrate the chronograph in a quartz watch, pull the crown out to position 2 and set the chronograph seconds hand to 12 o'clock using the upper pusher (A, at 2 o'clock). Then push the crown back to position 0. This calibration is needed, for example, after a battery replacement or when a hand has shifted. In mechanical and mecha-quartz chronographs the procedure is different, and a shifted zero position requires a watchmaker's intervention.
What does chronograph calibration mean?
Chronograph calibration is the setting of the zero position of the stopwatch hands, so that after pressing the reset pusher the central seconds hand stops exactly at 12 o'clock, and the minute and hour counters show 0. It should not be confused with adjusting the accuracy of the watch's rate.
Calibration is not used to correct a watch that runs slow or fast. In that case the problem concerns the accuracy of the movement's rate, not the zero position of the chronograph hands.
If you want to learn how a stopwatch is built and how to use it, also check how a chronograph works.
Festina Chrono Sport 45 mm 20519/4 is an offer for those who want to combine sporty design with a chronograph function. Expressive subdials, a large case and contrasting details emphasize the dynamic character of the model, while the chronograph itself allows you to put the operating and hand-position control principles described above to practical use.
Why doesn't the chronograph hand return to zero?
In a quartz chronograph, the zero position of the stopwatch hand is stored electronically. The stepper motor cannot recognize the 12 o'clock position on its own. If the stored zero position is changed, the hand will stop before or after the correct point after a reset.
Miscalibration occurs, among other things, after the battery is completely drained or replaced, after the watch is hit, after contact with a strong magnetic field, or after the chronograph pushers are pressed with the crown pulled out to position 2.
|
Symptom |
Most common cause |
What to do |
|
The chronograph seconds hand stops next to 12 o'clock after reset |
battery replacement or impact |
perform the calibration appropriate for the caliber |
|
The minute counter shows e.g. 1 instead of 0 |
shifted zero position of the counter |
calibrate the counter by switching between hands with pusher B, if the given caliber supports this procedure |
|
The zero position shifted after contact with a magnet |
strong magnetic field |
perform calibration; in case of a mechanical problem, use a service center |
|
After calibration the hand stops in the wrong place |
the crown was pushed in while the hand was still moving |
repeat the procedure and wait for the hand to stop completely |
|
After successive resets the hand stops in different places |
mechanical fault |
take the watch to a service center |
|
A mechanical chronograph does not return to zero |
shifted hand or a problem with the reset mechanism |
take the watch to a watchmaker |
If your watch has been in contact with a strong magnetic field, also read what to do if you have a magnetized watch.
Orient Sports Mako Solar Chronograph 42 mm RA-TX0208L10B Limited Edition is an example of a modern solar chronograph in which sporty styling meets practical time measurement. The blue dial with three subdials emphasizes the character of the model, and light-powered operation eliminates the need for regular battery replacement. It is a good example of a watch in which correctly setting the zero position of the chronograph hands is crucial for the stopwatch function to work properly.
How to calibrate a chronograph step by step?
The procedure depends on the movement used. The method below corresponds to the solution used, among others, in the popular quartz caliber Miyota 0S20.
- Pull the crown out to position 2, i.e. the second click.
- Press the upper pusher (A, at 2 o'clock). Each short press moves the chronograph seconds hand by one step. Holding the pusher down starts fast movement of the hand.
- Stop the seconds hand exactly at 12 o'clock and wait until it stops moving.
- Push the crown in to position 0, then perform a reset with the lower pusher (B, at 4 o'clock) and check the position of the hands.
Note: do not push the crown in while the seconds hand is still moving. In a movement such as the Miyota 0S20, the watch will store the position where the hand finally stops as the new zero. In that case the procedure must be repeated.
The Miyota 0S20 measures time up to 59 minutes and 59 seconds, and the declared accuracy of the movement itself is ±20 seconds per month. You can find more information about this family of calibers in the article on what the Miyota movement is.
If this procedure does not work, check the manual for your caliber or take the watch to a service center.
Versace Sport Tech Lady Chrono 40 mm VEKB00522 shows that a chronograph can combine functionality with a distinctly jewelry-like character. The blue dial with three subdials, the steel bracelet and the characteristic Versace motifs create an elegant, sporty design. In such a watch, correctly set chronograph hands matter not only for accurate time measurement, but also for preserving the symmetry and legibility of the entire dial.
How to set the chronograph seconds hand to 12?
Pull the crown out to the position required by the given caliber. In the Miyota 0S20 it is position 2. Then, using the upper pusher (A, at 2 o'clock), move the central chronograph seconds hand until it is set exactly at 12 o'clock.
Do not rely solely on the A and B markings. The pusher layout is not identical in every watch, so before starting calibration check the manual for the specific movement. If it does not work, check the manual for your caliber or take the watch to a service center.
How to calibrate the minute and hour counters?
Chronographs with several counters require separate setting of each hand. An example is the Ronda 5030.D, a Swiss quartz movement with three chronograph indications.
Pull the crown out to position 2. Then press and hold the upper pusher (A, at 2 o'clock) and the lower pusher (B, at 4 o'clock) at the same time until the central seconds hand makes a full revolution.
Use pusher A to set the seconds hand to zero. Press B to move to the hour counter and set its position with pusher A. The next press of B switches the adjustment to the minute counter. After setting all the hands, push the crown in to position 0. If this does not work, check the manual for your caliber or take the watch to a service center.
Can you calibrate every chronograph yourself?
No. The procedure depends primarily on the construction of the movement. Calibration using the crown and pushers is used in many quartz and solar chronographs, whereas a shifted zero position in a mechanical or mecha-quartz construction requires a watchmaker's work.
|
Movement type |
Example calibers |
Self-calibration |
How to do it |
|
Quartz, 2 chronograph hands |
Miyota 0S20 |
Yes |
crown pos. 2 → pusher A to 12 o'clock → crown pos. 0 |
|
Quartz, 3 chronograph hands |
Ronda 5030.D |
Yes |
crown pos. 2 → A+B → A sets the hand → B switches counters |
|
Solar |
Citizen Eco-Drive, e.g. B620 |
Yes, depending on the caliber |
crown pos. 2 → activate correction mode according to the manual → set the hand → finish the procedure |
|
Mecha-quartz |
Seiko / TMI VK63, VK64 |
Not for a shifted zero |
system reset possible; a mechanically shifted hand requires service |
|
Mechanical |
Valjoux 7750, Sellita SW500, Seiko 8R |
No |
the zero position is set by a watchmaker |
Before you start calibrating, check the caliber number of your watch. It is the caliber, not the brand name itself, that determines the correct procedure. See also what a caliber number is and where to find it.
How to calibrate a Citizen Eco-Drive chronograph?
In Citizen Eco-Drive watches the procedure depends on the caliber number. In many models you first pull the crown out to position 2 and then hold the pusher indicated in the manual for about 2–3 seconds, to enter the correction of the chronograph hand position.
In some calibers the upper pusher is used, and in others the lower one. Short presses move the hand step by step, and holding the pusher starts continuous movement.
You can find the Citizen caliber number on the case back. The first four characters of the designation are the movement number, e.g. B620. Before performing the procedure, an Eco-Drive watch should be fully charged.
Seiko VK mecha-quartz chronograph – what can you do yourself?
Seiko / TMI VK63, VK64 and VK67 movements combine a quartz drive of the timekeeping with the mechanical operation of the chronograph part. The stopwatch reset is performed mechanically, so a shifted zero of the hand cannot be set with the pushers as in the Miyota 0S20.
After a battery replacement the manufacturer provides for a system reset. In movements from this family it is performed according to the caliber's manual, among other things by setting the crown to position 2 and using the lower pusher (B, at 4 o'clock). However, this is not an electronic calibration of the hand position. If after the reset the hand still does not stand exactly at 12 o'clock, the watch requires mechanical adjustment at a service center.
Roamer Rimini Chronograph 45 mm 861837 41 45 20 is a sporty chronograph with an expressive blue dial and a classic three-subdial layout. The steel bracelet and the "Units per Hour" scale on the bezel emphasize the technical character of the model. It is a good example of a watch in which precisely setting the chronograph hands has a direct impact on legibility and on correct use of the time-measuring function.
How to avoid miscalibrating your chronograph in everyday use?
Do not press the chronograph pushers with the crown pulled out to position 2, unless you are performing a procedure provided for in the caliber's manual. After a watch battery replacement, start the chronograph, stop it and perform a reset. Check whether the central seconds hand has returned exactly to 12 o'clock and the counters to position 0.
Also avoid setting the date during the hours when the movement begins changing the indication. For the Miyota 0S20 this is the range 21:00–1:00, and for Seiko VK movements 21:00–3:00. Keep the watch away from strong magnets, speakers and other sources of an intense magnetic field.
When will calibration not help and you need to see a watchmaker?
Take the watch to a service center when:
- you have a mechanical or mecha-quartz chronograph and the hand does not return exactly to zero after reset,
- the seconds hand stops in different places after successive resets,
- the hand jitters, jumps unevenly or does not respond properly to the pushers,
- the procedure provided in the manual of the specific caliber has no effect,
- the repair requires opening the case or refitting the hand onto its arbor.
If the watch is covered by a warranty, check the manufacturer's or seller's terms before opening the case. Tampering with the movement yourself is not the same as calibration performed using the crown and pushers.
A properly set chronograph lets you use the stopwatch without wondering whether the hands show the correct position after a reset. The most important thing is to match the procedure to the specific caliber instead of applying one instruction to all watches. Check out men's chronograph watches and women's chronograph watches available in the offer of the online watch store WestWatches.
Krzysztof Szopa
Watch Expert
An expert associated with the WestWatches.pl brand, a place that has been delivering watches for every occasion for years. Thanks to many years of experience in the watchmaking and jewelry industry, he passionately shares his knowledge, offering professional advice both in the online and brick-and-mortar store. He specializes in selecting original watches, watch accessories and jewelry that combine exceptional quality with competitive prices. His goal is to help customers find the perfect product that will meet their expectations and highlight their style.
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