oS, the Swedish independent watch brand, unveils its new blue Guilloché option for the Norrsken collection, named after the the Swedish term for Northern Lights.

If you have never seen Northern lights with your own eyes, it is hard to imagine that it can be of any other colour than green. However, Northern lights can also be deep blue under certain conditions.

This timepiece captures the appearance of swirling blue lights dancing across northern skies to emulate this natural phenomenon. The watch draws upon the expertise of various artisans and features a hand-cut guilloché dial and a micro-rotor movement. A handblown index ring, formed of Swedish crystal, allows an extraordinary degree of luminescence to pass through its clear surface, flooding the dial with vivid bright blue tones.

The Norrsken is available with a choice of case rings, dials and bezels. At the heart of the watch is the Calibre GoS03, featuring premium finishing and a customised micro-rotor hand-forged in Damascus steel. The microrotor for the blue Guilloche-option receives a Midnight Blue heat-tempered finishing, which previously has been available for GoS Damascus steel dials only.

The Norrsken is housed in a 41.5mm stainless steel case and encompasses an array of materials. It is available with a Damascus steel dial, a material synonymous with GoS, or a hand-guilloché dial. This latter option is produced in collaboration with the renowned guilloché specialist, Jochen Benzinger.

The index ring, encircling the dial, is produced by Swedish master craftsman, Mikael Kenlind of Vas Vitreum. This clear index ring is hand-sculpted and handblown in Swedish crystal, a rare form of glass seldom seen outside of the country. Twelve small fixation points hold the index ring in place, allowing a degree of flex and thereby mitigating the risk of damage should the watch be subject to impact.

James Thompson and his company, Black Badger, again based in Sweden, provide an insert ring cast from solid Badgerite. This solid lume material, developed in collaboration with Swiss firm, RC Tritec, the makers of SuperLumiNova, is positioned behind the glass index ring. The clear glass ring refracts light into the case, creating a mesmerising bright blue shimmer. A further application of lume is positioned below the index ring near the exposed dial area, enhancing the readability of the indexes. A special colour of lume and method of application were developed specifically for this watch. This means of illumination shuns any form of electronics or high-tech luminescence, concepts alien to GoS, a firm which is renowned for employing traditional handcraftsmanship.

Spear-shaped hour and minute hands convey the prevailing time, while the GoS triskele indicates the running seconds. Both the index ring and seconds display are recessed within the dial, which is filled with SuperLumiNova.

Like the dial, the case of the Norrsken is also available in two variants. One option features a highly polished stainless-steel case ring, while a second version is endowed with a Damascus steel case ring. Another option is to request Black Damascus treatment of the damascus steel case parts. The bezel and the caseback are facetted, accentuating the appearance of the fluted case ring.

The bezel is available in a choice of highly polished stainless steel or Damascus steel, both finished in the GoS workshop. Furthermore, all pin buckles are forged of Damascus steel, produced by GoS, and feature the brand’s triskele logo.

The caseback is fitted with a pane of sapphire crystal allowing the wearer to view the automatic movement within.

The Calibre GoS03 is made by movement specialist Schwarz Etienne and customised by GoS. It encompasses premium finishing, including hand-polished bevels and specific modifications requested by GoS, including a dedicated escape wheel bridge.

GoS has equipped the movement with its own micro-rotor, hand-forged in Damascus steel. Its upper surface is suffused with shades of green and black, matching the appearance of the dial. The micro-rotor sits flush with the neighbouring bridges, mitigating the height of the movement and providing unrestricted views of numerous beautifully finished components. The ratchet wheel is adorned with the GoS triskele emblem. When the mainspring is fully wound, the watch will run autonomously for 86 hours.

The Norrsken is supplied on a sumptuous strap, handmade in Stockholm from high-gloss, polished Salmon leather. Salmon leather in black/blue is available as an option to the glossy black Salmon. Finally, the watch is presented in a handblown Swedish crystal presentation box, once again, handcrafted by Mikael Kenlind of Vas Vitreum.

TECHNICAL SPECIFICATIONS

Functions

• Hours, Minutes Seconds
• Small second at 6h:00 in the shape of the GoS triskele

Movement

• Manufacture movement by Schwarz Etienne with GoS-specific modifications and finishing
• Automatic winding with a micro-rotor and handfinished damascus steel counterweight
• GoS triskele engraved on click wheel
• Handpolished bevels on all bridges
• Separate bridge for escape wheel
• 21,600 vibrations/hour
• 86h power reserve
• Stop-seconds mechanism
• 33 jewels – 199 parts
• 30.40mm x 5.25mm

Case

• 41.5mm x 12.1mm (8mm at edge)
• Stainless steel with optional Black DamascusTM case ring and/or Black Damascus^TM steel bezel.
• Sapphire crystals front and caseback – Front crystal domed with double sided anti-reflective coating
• Transparent crystal gaskets in new Swiss-developed material
• 5ATM water resistance (50m)
• Crown with double gaskets and GoS internal impact protection.

Dial

• Damascus steel: Handforged Swedish tool steel by GoS bladesmiths - machined and finished by Patrik Sjögren
• Guilloche: Silver dial handturned by master Jochen Benzinger - machined and finished by Patrik Sjögren
• Hour index recesses filled with midnight blue Badgerite, developed by James Thompson and Swiss SuperLuminova
• Transparent index ring in Swedish Crystal - individually handmade by master glass artisan Mikael Kenlind
• Solid ring of Badgerite applied round the Crystal index ring.

Hands

• GoS viking spearhead – Rhodium plated
• GoS triskele small seconds hand

Strap

• Polished Salmon leather – black or blue/black – Made in Stockholm
• Tapered 21mm to 20mm with rounded padding
• Pin buckle in stainless damascus steel with GoS triskele logo

Presentation box

• Individually handcrafted presentation box in Swedish crystal, handmade by glass artisan Mikael Kenlind

Availability

• Limited to 50 pieces
• Every watch is a unique piece and made on order.
• Price range from US$19.500 to US$24.500 (excl applicable taxes) depending on selected options.
• Price for Norrsken with bespoke alternatives or case in precious metal on request.