The CTB joins Arnold & Son's Instrument Collection - and, like every other model from Arnold & Son, features an in-house mechanical movement. This line is inspired by the timepieces produced during the second part of John Arnold's life when he and his son, John Roger, dedicated themselves to the quest for absolute precision (thereby establishing themselves as official suppliers to the Royal Navy).
Caliber A&S7103 Exclusive Arnold & Son mechanical movement, self-winding, column-wheel, ceramic ball bearing, 31 jewels, diameter 30.4 mm, thickness 8.2 mm, power reserve 45h (without chronograph), 28,800 vibrations/h. Movement decoration : palladium treated with Haute Horlogerie finishing: hand-chamfered bridges and polished edges, fine circular graining and Côtes de Genève rayonnantes, circular satin-finished wheels, blued screws with bevelled and mirror-polished heads. Oscillating weight: skeletonised with brushed surfaces
18-carat red gold, diameter 44 mm, cambered sapphire with anti-reflective coating on both sides, see-through sapphire case back
Dial Silvery-white and silvery opaline
Strap Hand-stitched black or brown alligator leather