Arnold & Son takes its name from John Arnold (1736–1799), the English watchmaker known for improving the reliability of the marine chronometer, who in 1764 presented King George III with a half-quarter repeater set in a ring. The modern brand has no direct business continuity with Arnold’s London firm: it was relaunched in Switzerland in 1995 by The British Masters in Timekeeping and is based in La Chaux-de-Fonds. In 2010 it became part of Manufacture La Joux-Perret, and in 2012 the Japanese Citizen group acquired the holding company of both. Its roughly twenty calibres are designed, produced and finished by La Joux-Perret.
The collection is organised around three themes taken from Arnold’s work: astronomy, chronometry and world time. In astronomy, the Luna Magna carries what the brand describes as the largest rotating relief moon made for a wristwatch, while the Perpetual Moon pairs a large moon-phase display with dials often cut from hardstones and minerals. Chronometry models include the Time Pyramid, the Ultrathin Tourbillon, the Constant Force, the DSTB, the HM and the Nebula, and the Globetrotter covers world time. Recent releases include Perpetual Moon editions for the Chinese years of the Snake (2025) and the Horse (2026), DSTB Stop-Seconds editions and a Time Pyramid 42.5 with malachite in early 2026.
