The Tool Desk
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Specifications at a glance
Everything in the table below is Bremont’s own published data from its product page (the Australian site was the one consulted). None of it has been independently verified.
| Item | Bremont’s stated spec |
|---|---|
| Movement | Modified 13¼”’ BE-54AE automatic, chronometer rated to ISO 3159 |
| Jewels / frequency | 25 jewels; 28,800 beats per hour |
| Power reserve | 42 hours |
| Functions | Hours, minutes, seconds; date at 3 o’clock; chronograph with seconds, 30-minute and 12-hour counters; 24-hour UTC hand; world-time function |
| Case | Hardened stainless-steel Trip-Tick construction; DLC-treated case barrel |
| Size | 43 mm diameter, 16 mm thick, 22 mm lug width |
| Crystal | Sapphire, double anti-reflective, scratch-resistant |
| Dial and hands | Metal dial; nickel hands with Super-LumiNova C1 |
| Water resistance | 10 ATM / 100 m |
| Strap | Black-dial page: black leather strap with deployment buckle. The 2022 brochure also describes a stainless-steel bracelet option. |
How the world-time function works
The ALT1-WT combines two separate time displays. A rotating internal ring carries the city names, and an adjustable 24-hour hand points to a time on a 24-hour scale. Bremont also says the 24-hour hand can show UTC, or “Zulu” time.
Bremont’s customer-service FAQ says: “The World Timer function on the ALT1-WT can be operated using the crown at the 8 o’clock position.” Its instruction for selecting a zone is: “Simply turn the 8 o’clock crown clockwise or anticlockwise depending on the time zone that you wish to select.”
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- Citizen Eco-Drive Radio-Controlled Chronograph World Timer; Blue Angels edition with caseback insignia
- Synchronized to Atomic Time Clock for Superior Accuracy, Atomic Timekeeping Technology with Synchronized Time Adjustment Available in 26 Time Zones, 1/20 Second Chronograph Measures up to 60 Minutes, Perpetual Calendar, 12/24 Hour Time, Power Reserve Indicator, Day/Date
- Silver-Tone Stainless Steel
- Anti-Reflective Sapphire Crystal
- 200 Meters Water Resistant and 5 Year Limited Warranty
Reading a city in practice
- Use the crown at 8 o’clock to turn the internal ring.
- Bring the city you want, Bremont’s example being Tokyo, to the 12 o’clock position.
- Read that city’s time against the GMT (24-hour) hand.
The practical consequence is that you read local time for a selected city from a 24-hour scale. You do not read it from the main hour hand. That is useful for checking a distant office or a flight’s destination, but it takes a moment of interpretation. It is slower than a plain second-time-zone hand. Bremont’s published material does not say whether the ring and the 24-hour hand are coupled or independent, so check that on any specific watch before relying on it.
Origins
In a 2016 article, Bremont says it received a commission in 2010 to produce a global timer for a military C-17 Globemaster crew, and then developed a civilian World Timer from it. This is the brand’s own account and has not been independently confirmed. It explains the watch’s UTC/Zulu emphasis and its cockpit-instrument styling.
Rank #2
- 🌍 World Time Dial & Self-winding Automatic Movement -- Features a striking globe-themed dial with 24-time zone displaying both local time and time in other time zones, designed for frequent business travelers and globe-trotters. Self-winding mechanical movement harnesses kinetic energy from wrist motion—no battery required—no manual winding needed—for effortless precision
- 💎 Premium Durability & Comfort -- Combines a 55mm stainless steel case, scratch-resistant crystal glass (anti-glare), and a supple leather strap; the butterfly clasp design can reduce wear and tear on the leather strap, eliminating the need to bend and fold the strap as much as with other buckle types. Built for daily elegance, from office meetings to formal events
- 🔧 Exquisite Skeleton Design -- Showcases intricate mechanical artistry through a transparent dial, revealing the automatic rotor and gears. The bold 55mm size and globe dial design ensure readability, blending fine watchmaking craftsmanship with modern functionality
- 🏊 50M Waterproof & Travel-Ready -- Engineered for sports enthusiasts, it can withstand splashes or brief immersion in water. With a reinforced seal to protect the movement, investing in this high-quality, water-resistant watch is a smart choice if you're looking for a watch that matches your active lifestyle
- 【✨ Caring for Your Mechanical Watch】Please be mindful when engaging in sports or activities with strong, repetitive arm movements (like swinging a racket or hammering or strenuous labor). These motions generate extreme G-force that can overspeed the balance wheel, affecting the watch's accuracy and lifespan. For intense physical activities, we suggest simply taking the watch off to protect its inner workings—it only takes a second and ensures your timepiece stays in top condition
Size and dial: where the layered design costs you
A 43 mm diameter, 16 mm thickness and 22 mm lugs make this a substantial watch. The thickness is the figure to weigh, since a chronograph movement plus a world-time mechanism adds height. Whether that is comfortable depends on your wrist and your sleeves, and Bremont’s figures cannot tell you that. Try one on if you can.
The dial also carries a lot. It has three chronograph counters, a date, a city ring and a 24-hour hand. Bremont’s materials do not include a legibility assessment, and none was independently tested. Expect a dial that rewards familiarity rather than glanceability. If you rarely use the chronograph, or rarely travel across time zones, you are paying in bulk and clutter for functions you will not use.
Rank #3
- This world time full automatic mechanical watch, designed by Swiss chief designer Etienne Ruffieux with the Earth as his inspiration, featuring a three-dimensional relief technique, the dial masterfully recreates the undulating topography of land and sea. This timepiece has been honored with the prestigious German Design Award in Berlin for its exceptional original design. Let's sail the seven seas with our World Time collection.
- In-house CAL.A4610 fully automatic mechanical movement, bidirectional automatic winding system, 28,880 vibrations per hour, 27 ruby bearings. Exquisite perlage and geneva stripes finishing, edge chamfering process, white gold plating, and engraved gold-plated brand logo highlight exceptional high-end craftsmanship.
- In-house CAL.A4610 fully automatic mechanical movement. Enhanced power reserve technology delivers an extended 80-hour power reserve (twice that of standard mechanical movements). This technology enables a more even and gradual release of the mainspring, resulting in more precise and stable timekeeping.
- As the Earth rotates ceaselessly, day turns to night and time zones shift around the globe. The World Time collection displays time differences across 24 global time zones via the time difference ring and city bezel. This technology has been granted a utility model patent. Travel the globe, roam the seven seas—all within the palm of your wrist.
- Water-resistant to 50 meters, featuring sapphire crystal, and an Italian leather strap with hand-stitched detailing for comfortable and durable wear. We offer a three-year worldwide warranty.
Strengths and trade-offs
- For: automatic chronograph, world time and UTC in one watch; chronometer rating claimed to ISO 3159; sapphire crystal; 100 m water resistance; DLC-treated case barrel; a documented aviation-derived backstory.
- Against: large and thick; busy dial; a 42-hour power reserve that is modest if you rotate watches; no longer made.
Buying a retired ALT1-WT
Bremont’s current Australian product page says the ALT1-WT has retired from its catalogue. Availability is therefore a question of individual listings. A retailer page for the ALT1-WT/BK showed as out of stock when indexed. That is a snapshot only, not evidence of the wider market, and no systematic sales data was gathered, so no price is quoted here.
Checks before you pay
- Confirm the exact dial and strap or bracelet variant against the listing’s photos and reference number.
- Ask for service history and whether box and papers are included.
- Check that the strap or bracelet fits properly. Bremont lists a 22 mm lug width, but end fittings and original-part availability should be confirmed rather than assumed.
- Have the seller demonstrate the chronograph start, stop and reset, and the 8 o’clock crown turning the city ring.
- Read the return terms.
These are sensible precautions, not known defects of this model.
Rank #4
- GMT World Time & Sub Second Dial for Global Precision: This men's mechanical watch features a GMT function to effortlessly track time across 24 time zones worldwide. The sub second dial ensures accurate seconds reading, making it ideal for frequent travelers and global business elites.
- SEA-GULL Reliable ST17 Automatic Movement: Powered by the Sea-Gull ST17 automatic-winding movement (21,600 vibrations per hour), this watch guarantees precise timekeeping. With 17 jewels, the movement operates smoothly and durably — no manual winding is needed during daily wear.
- Exhibition Case Back: Showcase Mechanical Artistry: The transparent case back reveals the intricate Sea-Gull ST17 automatic movement, allowing you to admire the precise gears, rotor, and 17 jewels in motion. It turns the watch into a wearable piece of mechanical art, highlighting craftsmanship and engineering excellence.
- 316L Stainless Steel Case & Sapphire Crystal: The case (41mm diameter, ~10.5mm thickness) is made from corrosion-resistant 316L stainless steel. The synthetic sapphire crystal protects the dial with high clarity and scratch resistance, ensuring long-lasting visibility.
- 5ATM Waterproof, Luminous Details & Warranty: With 5ATM water resistance, it withstands splashes and light rain. Luminous hands/markers glow at night after absorbing daytime light. Backed by a 1-year warranty, you can shop with confidence.
What to compare it with
I did not examine specific rivals closely enough to rank them. Judge alternatives on these points:
- A full city ring versus a simpler GMT or UTC hand: more destinations, but a more involved setup and read-out.
- Whether you will really use both the chronograph and the travel functions, given how crowded the dial gets.
- Case diameter and thickness relative to your wrist.
- Strap or bracelet options and how easy replacements are to source.
- Condition, paperwork and price of the particular used watch.
The Bottom Line
The ALT1-WT suits someone who wants a chronograph, UTC and a city-ring world timer in one aviation-flavoured case, and who accepts 43 mm by 16 mm and a crowded dial. If you want simple second-time-zone reading or a slimmer watch, look elsewhere. Because Bremont has retired it, buy only a listing that matches the exact variant and comes with clear condition, service and return details.
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Quick Recap
Best Value
- GMT World Time & Sub Second Dial for Global Precision: This men's mechanical watch features a GMT function to effortlessly track time across 24 time zones worldwide. The sub second dial ensures accurate seconds reading, making it ideal for frequent travelers and global business elites.
- SEA-GULL Reliable ST17 Automatic Movement: Powered by the Sea-Gull ST17 automatic-winding movement (21,600 vibrations per hour), this watch guarantees precise timekeeping. With 17 jewels, the movement operates smoothly and durably — no manual winding is needed during daily wear.
- Exhibition Case Back: Showcase Mechanical Artistry: The transparent case back reveals the intricate Sea-Gull ST17 automatic movement, allowing you to admire the precise gears, rotor, and 17 jewels in motion. It turns the watch into a wearable piece of mechanical art, highlighting craftsmanship and engineering excellence.
- 316L Stainless Steel Case & Sapphire Crystal: The case (41mm diameter, ~10.5mm thickness) is made from corrosion-resistant 316L stainless steel. The synthetic sapphire crystal protects the dial with high clarity and scratch resistance, ensuring long-lasting visibility.
- 5ATM Waterproof, Luminous Details & Warranty: With 5ATM water resistance, it withstands splashes and light rain. Luminous hands/markers glow at night after absorbing daytime light. Backed by a 1-year warranty, you can shop with confidence.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
