2018 marks 240 years since the creation of John Arnold’s historically significant Chronometer No. 1/36, the first time-measuring instrument to be called a “chronometer” for its unprecedented precision. To mark the historical milestone, Arnold & Son is proud to introduce a modern homage edition of the Tourbillon Chronometer No.36, a COSC-certified Tourbillon wristwatch.



Hours, minutes, small seconds
Manufacture Arnold & Son calibre, hand-wound, 33 jewels, diameter 37.8mm, thickness 5.9 mm, power reserve 90 h, double barrel, 4 Hz / 28,800, COSC certified
Movement Decoration
NAC treated bridges and black DLC treated main plate withHaute Horlogeriefinishing: sand blasted bridges with chamfered and polished edges, 18k gold chatons, screws with bevelled and mirror-polished heads
Tourbillon cage
Mirror-polished with hand-chamfered polished edges and circular satin-finished surfaces
18-karat red gold, diameter 46 mm, cambered sapphire with anti-reflective coating on both sides, see-through sapphire case back
Anthracite open dial with golden indexes
Hand-stitched brown or black alligator leather
Water Resistance
30 m