TAG Heuer · TAG Heuer Calibre 5

TAG Heuer Aquaracer, Carrera and Link power reserve: inside the Calibre 5

The TAG Heuer Aquaracer, Carrera Calibre 5, Link and Formula 1 automatics run on the Calibre 5, which lasts about 38 hours off the wrist. That's just over a day and a half, so it won't make it through a weekend in a drawer.

Updated September 2026 · Based on manufacturer specs, published reviews and watchmaker/owner reports

Watches that use the Calibre 5

For well over a decade, the Calibre 5 was the engine in almost every three-hand automatic TAG Heuer. It isn't a TAG Heuer design. It's TAG Heuer's name for a Swiss workhorse: the Sellita SW200-1 in recent watches and the ETA 2824-2 in many older ones, with a day-date version based on the Sellita SW220-1 or ETA 2836. TAG Heuer is now replacing it in its main lines, so it's most likely to be in a watch bought before 2024.

"Calibre 5" is usually printed on the dial or the caseback, which makes it easy to check. If yours says TH31, TH30 or Calibre 7, it has a different movement with a longer reserve.

Specs at a glance

History and where it came from

TAG Heuer names its movements with its own calibre numbers rather than the supplier's, and Calibre 5 is its label for a three-hand automatic with date. For years TAG Heuer bought the base movements from ETA, the Swatch Group movement maker. The Calibre 5 was an ETA 2824-2 with a TAG Heuer rotor, and the Day-Date was an ETA 2836.

When Swatch Group began cutting supplies to outside brands in the 2010s, TAG Heuer, like much of the industry, moved to Sellita. The SW200-1 is a close copy of the 2824 built after its patents expired, so the change made almost no difference to owners. Reviews of the 2021 Aquaracer Professional 300 and Carrera Date 39 mm list a Sellita SW200-1 base, while aBlogtoWatch has described the Calibre 5 as a relabelled ETA as well. Depending on the year, you may find either inside.

The Calibre 5 is now being retired from TAG Heuer's main lines. The 36 mm Carrera Date moved to the Sellita SW300-based Calibre 7 with 56 hours in 2023. In 2024 the Aquaracer Professional 300 Date switched to the TH31-00, a COSC-certified 80-hour movement made for TAG Heuer by Sellita's high-end AMT division. The Carrera Day-Date followed with the TH31-02 in 2025.

Accuracy in the real world

TAG Heuer doesn't publish an accuracy spec for the Calibre 5, and it isn't COSC-certified. Watches from this generation typically run within the loose limits of the base movement. Owners on watch forums commonly report single-digit to low-teens seconds a day, and a watchmaker can usually bring one closer with a quick regulation.

The 4 Hz beat helps: it's more tolerant of knocks and position changes than a slower movement, and the seconds hand sweeps smoothly. What hurts accuracy is the short reserve. Like most movements, the Calibre 5 tends to lose amplitude, and rate stability, in the last hours before it stops. With only 38 hours in the spring, a watch that sat on a desk for a day is already in that zone.

There's no silicon hairspring, so it's as sensitive to magnetism as any conventional movement. If an Aquaracer suddenly gains a minute a day, a demagnetiser is the first thing to try.

Reliability and servicing

This is the Calibre 5's strongest point. The SW200-1 and 2824-2 are two of the most common automatic movements ever made.

• Any watchmaker can service it. Parts are widely available for both the Sellita and ETA versions, so you aren't tied to TAG Heuer's service network.
• Proven design. There's no known systemic fault, and the 2824 layout has been in production since the early 1980s.
• Service costs. Independent service is usually cheaper than for a proprietary calibre. Brand service also works and includes case refinishing and water-resistance testing.

Quirks worth knowing

• Short reserve. 38 hours is on the low side for a watch at this price, and it's the main complaint in reviews. Monochrome called it "a bit low compared to some of the newer, comparable movements".
• Audible rotor. The rotor on 2824-type movements can sometimes be heard or felt spinning on the wrist. That's normal.
• Date changes at night. It has a quickset date (and day on the Day-Date). As with most date movements, don't set it late at night. Here's why.
• Same name, different base. Two Aquaracers both marked "Calibre 5" may have different movements inside, one ETA and one Sellita. For servicing it rarely matters.

How it compares

• Sellita SW200-1 / ETA 2824-2: the same movement under a different name. Mostly the finishing and rotor differ.
• TAG Heuer Heuer 02: TAG Heuer's in-house chronograph, with 80 hours of reserve.
• Longines L888: the rival at a similar price. 72 hours and a silicon hairspring.
• Powermatic 80: 80 hours in a Tissot PRX costing a fraction as much, but at 3 Hz.
• Oris Calibre 400: the Aquaracer's direct rival in the Oris Aquis. 120 hours and a 10-year warranty.

Living with the 38-hour reserve

Thirty-eight hours is the number to plan around. Take your Aquaracer off at 6pm on Friday and it stops at about 8am on Sunday. If you wear something else all weekend, you'll be resetting the time and date on Monday morning. A Carrera you last wore on Wednesday won't be running on Friday.

Even overnight matters if the watch wasn't fully wound. A Carrera worn for a few hours of desk work may only have 20 or so hours in it, and could stop before breakfast. If you rotate a Calibre 5 with other watches, give it 20 to 30 crown turns before you take it off for a day or more. Watch Winder counts down this 38-hour reserve for each watch you own and reminds you before it stops. To check a specific weekend, try the "Will my watch stop?" calculator.

Verdict

The Calibre 5 is a solid, unexciting Swiss workhorse in a nicely made case. It hacks, hand-winds, beats at 4 Hz and can be serviced by nearly any watchmaker, which is worth a lot over decades of ownership. The weakness is the 38-hour reserve, which feels dated next to the 72 to 80 hours of rivals at the same price and TAG Heuer's own newer TH31. If you wear your Aquaracer or Carrera daily, you'll rarely notice. If you rotate watches, you'll be setting it often.

FAQ

How long does a TAG Heuer Aquaracer run off the wrist?

An Aquaracer with the Calibre 5 runs for about 38 hours from a full wind, so it will usually stop during a weekend off the wrist. The 2024 Aquaracer Professional 300 with the TH31-00 lasts about 80 hours.

Does the TAG Heuer Carrera Calibre 5 hack?

Yes. The Calibre 5 stops the seconds hand when you pull the crown out to set the time, and you can wind it by hand through the crown.

How accurate is the TAG Heuer Carrera Calibre 5?

TAG Heuer doesn't publish a figure and it isn't a chronometer. Owners typically report rates from a few seconds to low teens per day, and a watchmaker can regulate it.

Why did my TAG Heuer Aquaracer stop overnight?

It probably wasn't fully wound. The Calibre 5 holds only 38 hours at best, and a day at a desk may leave far less, so give it 20 to 30 turns of the crown.

What movement is in the TAG Heuer Calibre 5?

It's a Sellita SW200-1 in most recent watches and an ETA 2824-2 in many older ones. The Day-Date version uses a Sellita SW220-1 or ETA 2836 base.

Can any watchmaker service a TAG Heuer Link Calibre 5?

Yes. Because the Calibre 5 is based on a Sellita or ETA movement, parts are widely available and most competent watchmakers can service it.

Does the new TAG Heuer Aquaracer still use the Calibre 5?

The Aquaracer Professional 300 Date moved to the TH31-00 in 2024, which has an 80-hour reserve and COSC certification. Earlier Aquaracers, including the 2021 Professional 300, use the Calibre 5.

Sources

• Monochrome: TAG Heuer Aquaracer Professional 300 Calibre 5 (2021)
• Monochrome: TAG Heuer Carrera three-hand collection, Date 39mm and Day-Date 41mm
• Monochrome: Aquaracer Professional 300 Date with calibre TH31-00
• aBlogtoWatch: TAG Heuer Carrera Calibre 5 39mm and 41mm review
• aBlogtoWatch: TAG Heuer Link Calibre 5 review

Keeping it running

• On an average day an automatic gains roughly 4 hours of reserve per hour on the wrist, so about 10 hours of wear fills the TAG Heuer Calibre 5. Desk days charge more slowly.
• Most automatics can also be wound by the crown. If yours has stopped, a few dozen turns gets it going before you put it on.
• Off the wrist it stops about 38 hours after it was last full. Stopped sooner?
• On a watch winder, start at about 650 turns per day, both directions. Winder settings for every movement.
• If it does stop, don't set the date between 9pm and 3am. Check if it's safe.

All TAG Heuer movements

Never let it stop

Watch Winder counts down the reserve of every watch you own and reminds you before one stops. It already knows the TAG Heuer Calibre 5: type your watch's name and the reserve fills itself in.

Manufacturer's published figure. Real reserve varies with the watch's age and service; check your manual.