The Louis Erard x Vianney Halter II Worldwide Edition is the monochrome anchor of the 2025 “World Tour”: a silver-dial regulator with the collaboration’s industrial case details, made in a limited run of 178. The city editions retain that base design while changing the running-seconds hand and caseback inscription. The Worldwide reference is 85246AA01.BVA180; Louis Erard lists it at CHF 4,500 excluding tax.
Worldwide Edition: the monochrome starting point
The official name is Le Régulateur Louis Erard x Vianney Halter II – Worldwide Edition. Its silver monochrome dial gives the asymmetric regulator layout a quieter, more unified look than a multi-color treatment. Rhodium-plated, circular satin-brushed elements, polished chamfers, a vertically satin-brushed base, black transfers and logos at 2 and 8 o’clock provide the dial’s texture. The blued-steel hands are a signature detail of the Vianney Halter collaboration. Louis Erard’s product page identifies the reference as 85246AA01.BVA180 and lists the edition at 178 pieces.
In the regulator arrangement, the central hand indicates minutes; hours and running seconds appear in separate off-center subdials. The layout foregrounds the minutes rather than using the conventional central hour-and-minute pair. Around it, the case’s stepped bezel and 12 polished red-gilt 5N rivets continue the collaboration’s industrial, riveted visual language. The crown sits at 2 o’clock.
How the city editions differ
The World Tour builds on the Worldwide silver-dial design with city-linked versions. In the announced initial releases, the variation is deliberately focused: the running-seconds hand takes a local color, while the caseback wording is adapted for the city. The following launch details were reported in September 2025; they describe the initial stops, not necessarily the complete or current tour.
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#1 Best Overall
- 🌍 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
| City edition | Seconds hand | Caseback detail | Reported edition size | Retail partner and announced date |
|---|---|---|---|---|
| Takamatsu, Japan | Rhodium | French inscription: “Longue vie et prospérité” | 25 pieces | Eye Eye Isuzu; 2025-09-23 |
| Bangkok, Thailand | Anthracite | Local motto treatment; exact wording not stated by Timekeepers Club | 18 pieces | PMT The Hour Glass; 2025-09-24 |
| Hong Kong | Purple | Chinese-language inscription | 25 pieces | The Lavish Attic; 2025-09-26 |
| Singapore | Red-gilt | Local motto treatment; exact wording not stated by Timekeepers Club | 25 pieces | The Hour Glass; 2025-09-30 |
City colors, quantities, retail partners and dates are reported by Timekeepers Club’s September 2025 World Tour announcement; Monochrome also describes the silver base and city-specific seconds-hand colors in its 2025 first look. The announcement said more cities and dates would follow. The sources do not establish a U.S.-specific edition, nor do they establish that every city drop has the same price as the Worldwide Edition.
Louis Erard CEO Manuel Emch described the concept to Timekeepers Club this way: “We turn every city into a stage, every release into an event and every second into something worth hunting.” It is a succinct description of the event-led approach, not evidence of consumer response or sales performance.
Rank #2
- 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.
Case, movement and wear details
| Specification | Worldwide Edition |
|---|---|
| Reference | 85246AA01.BVA180 |
| Case | 43 mm stainless steel, polished and circular satin-brushed; 10.95 mm thick and 49.6 mm lug-to-lug, according to Monochrome |
| Bezel and crown | Stepped bezel with 12 polished red-gilt 5N rivets; crown at 2 o’clock |
| Crystal and caseback | Sapphire crystal with anti-reflective treatment on both sides; see-through caseback |
| Water resistance | 5 bar / 50 m / 165 ft |
| Movement | Automatic Sellita SW266-1 regulator; Louis Erard states a minimum 38-hour power reserve. Monochrome reports 28,800 vibrations per hour and an openworked oscillating weight. |
| Strap | Dark blue grained calf leather, tone-on-tone stitching and black calf lining; polished steel pin buckle, quick-change bars, and 22 mm lug width according to Monochrome |
The manufacturer’s specifications and Monochrome’s measurements are published descriptions, not a hands-on assessment of comfort, timekeeping accuracy or real-world performance. The 50 m rating is a stated water-resistance specification, not a claim that the watch is suited to every water activity.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price, availability and what it buys
Louis Erard’s product page lists the Worldwide Edition at CHF 4,500 excluding tax, with a three-year warranty and a displayed delivery estimate of 5–10 days. Those are the manufacturer’s listing details retrieved on 2026-10-07; price, delivery estimates and stock can change and may depend on destination. The listing does not establish current availability in every region.
Rank #3
- 🌍 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
At that listed price, the defining proposition is the combination of a regulator display, Halter-associated design details and a small numbered Worldwide run, rather than a city-specific seconds-hand color or inscription. A city version may appeal more to someone with a connection to one of the tour locations, but its price should be checked with its retailer rather than assumed to match the Worldwide Edition.
Quick Recap
Best Value
- 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.
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 remains unconfirmed
- The reviewed announcements do not confirm a U.S. city edition.
- They do not establish whether the initial four cities remain the only destinations or provide a complete current tour schedule.
- They do not confirm current stock across regions or city-edition pricing parity.
- They provide no basis for claims about secondary-market value or comparative movement accuracy.
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.
