New: Arnold & Son Longitude Titanium

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Arnold & Son introduces their Longitude collection with three new references in a 42.5mm titanium case with COSC certified chronometer.

Press Release information with commentary in italics.

New: Arnold & Son Longitude Titanium

The Arnold & Son Longitude Titanium in Ocean Blue and Fern Green has a retail price of SGD 33,000 and the King Sand model (limited edition of 88 pieces) has a retail of SGD 34,700.


And then Arnold & Son joins the luxury sports watch with steel bracelet bandwagon with the new Longitude in Titanium. Though the watch is a new introduction to the Arnold & Son lineup, it draws on the longstanding history of John Arnold and nautical timekeeping, going back to the days where his marine chronometers. However, though the Arnold & Son brand name is an old English watchmaker, the brand is neither English, nor has any ties to the England. The name was acquired by The British Masters based in Switzerland in the mid 1990s, and more recently became part of the portfolio of the mighty Citizen Watch Group. The Japanese giant acquired the brand name, together with the watchmaking knowhow within sister company La Joux Perret in 2012. And rather than hinder their development as a fully independent maison, the Japanese have spurred the brand in allowing it the room to grow and the resources to develop their own identity .

This introduction marks their entry into this, now very crowded space. A space pioneered by Gerald Genta who worked with Audemars Piguet to release the Royal Oak way back in 1972. The genre gained momentum when Patek Philippe released their Nautilus, also with Genta. In quick succession, other maisons joined the fray, with the likes of Vacheron Constantin 222, Piaget Polo, Chopard St. Moritz and Girard Perregaux Laureato. These maisons have recently refreshed their collection with VC showing off their Oversea collection and very successful recreation of the 222, the Piaget following up their Polo collection, Chopard succeeding their St. Moritz with the Alpine Eagle, and GP continuing with their Laureato collection. Others too joined in, notably Czapek & Cie with their Antarctique, H. Moser with the Streamliner, Laurent Ferrier with their Sport, and even Greubel Forsey with their Sport lineup. Even strong minded independents like F.P. Journe has a horse in this race with their lineSport collection. This is a very healthy market segment, if not one which is rather over crowded.

The watch comes with an additional blue or green strap.

This Arnold release is interesting in several ways. Firstly, the design has taken its base blueprint from the brand name’s maritime idendity. The titanium case is shaped like a vessel, with the bezel’s 60 notches echoing the fluted bezel of John Arnold’s chronometers. The bracelet looks very beautiful and the release literature claims it to be comfortable. We will give our verdict after we have tried the watches in person. And the movement is the La Joux Perret manufactured caliber A&S6302, an all new movement with COSC certification.

The watch only indicates the time with power reserve, and no additional nautical indications. However, this is apt and true to its moniker of Longitude, as a chronometer’s time is the only thing required to locate one’s longitude.

In terms of pricing, SGD 33k for a titanium cased automatic watch with power reserve in a titanium bracelet is perhaps fair game, as it is probably in the middle of the ballpark in the competitive landscape. Though we find it curious that the sand coloured dial edition, dubbed Kingsand carries a premium. No doubt the 88 piece limited edition is a reason why they priced it this way, but this is a “false limitation” as even the other two versions in ocean blue and fern green, though said to be unlimited, is strictly limited as well. Production resources are not unlimited. The only distinguishing feature is that it is not limited to a smallish 88 pieces and is not a numbered edition. You decide if the SGD 1.7k is worth the premium.

Release details

Arnold & Son, a benchmark in classic fine watchmaking, is exploring uncharted territory on the map of horology. Longitude Titanium is a sports-chic COSC-certified chronometer with a 42.5 mm titanium case. The dial of Longitude Titanium is vertical satin-finished in a continuation of the bracelet’s finish, which is subtly intersected by the polished edges of its links. With a power reserve display at 12 o’clock and an imposing seconds counter at 6 o’clock, Longitude Titanium pays tribute to John Arnold’s marine chronometers, his revolutionary vision and his decisive role in calculating longitude at sea.

The aesthetics and construction of John Arnold’s marine chronometers were necessarily classic and functional, and were adapted to the harsh conditions of the high seas. Longitude Titanium, a contemporary interpretation of the great English watchmaker’s work, coherently combines this naval heritage with a refined design and highly resistant materials. The movement’s ‘chronometer’ certification is an essential addition to this scene, with its historical ties to Arnold’s creations and his quest for accuracy.


As a natural consequence of this maritime identity, Longitude presents a titanium case whose curves and profile are directly inspired by the design of contemporary sailing boats. The case middle is taut like a ship’s waterline, while the case back is basin-shaped like a keel. The base of the bezel – the ship’s rail – is graduated with 60 notches, echoing the fluted ring of John Arnold’s marine chronometers. The finishes – polished on the flanks and satin-finished on the flat surfaces – continue this high-sea influence. The crown, protected by a shoulder, is screwed down to guarantee water-resistance to 100 metres.


With its flowing curves, Longitude Titanium is both comfortable to wear and a joy to behold. Each of the series is fitted with an integrated titanium bracelet. Everything is rounded with no straight lines, even in the finer details as the links themselves are domed. The succession of gentle curves and combination of polished and satin-finished surfaces are a continuation of the case’s identity. Longitude Titanium is complemented by an interchangeable system and comes with an additional rubber strap.


The dial of Longitude Titanium has been designed in a graphic and historical spirit. This graphic aspect can be seen in the satin-finished, polished and luminescent hour-markers that recall the shape of the bracelet links. It is also graphic in the display of its indications, which are aligned with the vertical axis of the dial: a mirror-polished power reserve indicator shown by cut-outs in the dial at 12 o’clock, the hour and minute hands in the centre, and the imposing small seconds at 6 o’clock. However, this layout was also chosen for its ties to John Arnold’s marine chronometers, as it was he who introduced this arrangement and established it as standard.


Cornwall, John Arnold’s birthplace, inspired the colours of the Longitude dials. The first edition, limited to 88 timepieces, is adorned with a sandy golden shade called ‘Kingsand’ in reference to the eponymous beach, which is one of the county’s hidden jewels. The second version sports an ocean blue, while the third and final series is a fern green.


During the 18th century, maritime trade was the main source of wealth. New routes opened up on the three major oceans, offering vast prospects. However, high-sea navigation was hampered by as yet incomplete maps and charts and, above all else, by inaccurate longitudes, i.e. the position of boats on the east/west axis. In 1714, the British Parliament passed the Longitude Act, which offered a prize of twenty thousand pounds to anyone who could develop a simple and dependable method for determining the longitude of a ship at sea. Briton John Harrison thus invented the marine chronometer, which would be used for centuries to come. His method involved measuring the difference between the local time on the boat, by finding solar noon, and the time of an onboard precision clock capable of keeping the time at the port of departure. John Arnold developed, improved and simplified the principles presented by Harrison. He started to supply his marine chronometers in 1771, which were more robust, affordable, extremely accurate and would go on to become essential to high-sea navigation.


At the heart of Longitude Titanium beats the new A&S6302 calibre, certified by the Contrôle Officiel Suisse des Chronomètres (COSC). It is wound by an oscillating weight with a design influenced by sailing. Its shape is reminiscent of the prow of an 18th-century English frigate cleaving through the water, and it is carved from a single block of 22-carat gold. Its felloe is engraved with graduations similar to those on a sextant – another maritime element.


The calibre is lavished with the same high standard of finishes commonly seen at Arnold & Son, such as chamfered bridges with the house’s specialty ‘Rayons de la Gloire’ motif. Like all its movements, the A&S6302 was entirely developed, produced, decorated, assembled, adjusted and cased up at the Manufacture in La Chaux-de-Fonds. This calibre features a large barrel and an oscillation frequency of 4 Hz, providing a 60-hour power reserve.

Arnold & Son Longitude Titanium Specifications


Hours, minutes, small seconds, power reserve


Calibre: A&S6302, self-winding mechanical, COSC-certified
Jewels: 36
Diameter: 33.00 mm
Thickness: 6.65 mm
Power reserve: 60 hours
Frequency: 4 Hz/28,000 vph
Mainplate: Palladium finish, circular-grained
Bridges: Palladium finish, polished and chamfered, ‘Rayons de la Gloire’ motif Wheels: Golden finish, circular satin-finished
Screws: Blued and chamfered, mirror-polished heads
Oscillating weight: 22-carat red gold (5N), skeletonised, chamfered, engraved


Kingsand gold, ocean blue or fern green PVD treatment, vertical satin finish
Power reserve: Blue PVD treatment, golden finish or rhodium-plating, mirror-polished Small seconds: Snailed
Hour-markers: Rhodium-plated or golden finish, coated with Super-LumiNova
Hands: Rhodium-plated or golden finish, skeletonised, coated with Super-LumiNova


Material: Titanium
Diameter: 42.5 mm
Thickness: 12.25 mm (with crystal)
Crystal: Sapphire, anti-reflective coating on both sides
Case back: Sapphire crystal, anti-reflective coating
Water resistance: 10 bar (100 m/330 ft)

Interchangeable bracelet

Titanium, folding clasp

Additional Strap

Blue or green rubber, titanium pin buckle


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