Bremont Altitude

The ALT1 origins

Bremont's first collection, released in 2007, included three pilot chronographs: the ALT1-C Classic, the ALT1-P Pilot and the ALT1-Z Zulu. The brand later grouped its original pilot designs under the Altitude name. The company was founded in 2002 by brothers Nick and Giles English with an aviation focus, and the pilot range grew out of that focus.

The ALT1-C has two registers and the BE-50AE caliber. The ALT1-P adds a three-register layout with an internal rotating bezel on the BE-53AE, and the ALT1-Z adds a UTC hand on the BE-54AE. Bremont's 2014 to 2015 catalogue describes all three as COSC-certified automatic chronographs, running at 28,800 vibrations an hour with about 42 hours of power reserve.

The 2025 redesign brought the MB Meteor, Chronograph GMT and 39 Date into the Altitude range. The redesign does not change the early ALT1 watches, but it does mean a service history has to be matched to the right model and generation.

Servicing the chronograph

A chronograph is more involved than a time-only watch. A full service covers the chronograph train, the reset mechanism, the pushers and the movement's timing. Ask the shop whether it has serviced chronograph calibers from the Valjoux family, and whether it has worked on Bremont's BE-50AE specifically. Ask how they will check the timing and the chronograph function after reassembly.

Bremont's service centre at The Wing is the factory route. The brand's service page sets a service every three to five years and a two-year warranty on complete service. It requires an estimate approval and charges for declined estimates, so read those terms before sending the watch in. Ask for the estimate to name the work for each part of the watch, not only a single total.

An independent can service a modified Valjoux 7750 if they can source the parts. Ask for a written list of the parts they expect to fit, so you can check it against the estimate. Chronograph parts are the usual bottleneck, so ask whether the parts are standard 7750 pieces or Bremont-specific, and how the shop would source a column wheel, clutch or heart piece if one needs replacing.

Buying a pre-owned Altitude

Check the model before the price. An ALT1-C, an ALT1-P and an ALT1-Z have different dials, registers and calibers, and a listing should give the reference and the movement. Look for BE-50AE, BE-53AE or BE-54AE on the paperwork or in the photos, and ask for a movement photograph if none is shown.

Test the chronograph if the seller allows it. Start, stop and reset it, check that the seconds hand returns to zero, and look at the register alignment. A chronograph that does not reset properly or that jumps needs service, and that cost belongs in the price discussion. Ask the seller whether the chronograph has been used regularly, since a watch that sits for years often needs more attention than its appearance suggests.

Ask for the service record and the warranty status. Bremont's warranty is generally three years from purchase, so an older watch may be out of warranty. Bremont's technical literature says serial numbers can be traced to its records, so ask the seller for the serial number before you commit.

Care and originality

Keep the watch away from strong magnets, and have the pushers checked if they feel stiff. Chronograph pushers take a lot of handling, and a stiff pusher is worth a look before it becomes a bigger problem.

Straps and bracelets wear faster than the movement. Leather straps need replacing after water exposure, and a bracelet that has been replaced should be disclosed and fitted to the right case size. Check the lugs for wear and cracks.

Originality is about the dial, the register hands and the case. A repainted dial or a swapped hand changes the value, so ask the seller and the shop to write down every replacement. Keep the box and papers with the watch, because they confirm the reference. If a previous owner replaced the crystal or the hands, ask whether the replacement was original to the brand or a later part.

Living with a chronograph pilot watch

A chronograph spends most of its life running the time train, but the pushers and the reset get the hardest use when it is timing something. Test the pushers periodically, and keep the watch away from strong magnets when you use it near tools or in the workshop.

Ask for a timing check after any chronograph service. A movement that runs well on the bench can behave differently on the wrist, so a record of the rate before and after the work gives you something to compare when the watch comes back.

Keep a service history for every pusher or reset repair, since chronograph problems can come back if the cause is not fixed. A shop that explains what caused a stiff pusher or a reset fault, and not only what it replaced, gives you a better sense of how the watch will behave over the next few years.

What to check on a Bremont Altitude

• Experience with chronograph calibers based on the Valjoux family
• A written estimate that states the declined-estimate terms
• Clear identification of the caliber, BE-50AE, BE-53AE or BE-54AE
• A plan for chronograph parts before the watch is booked in

Common questions