The new Time Pyramid models, starting with the Arnold & Son Time Pyramid 42.5, have lost some size
Arnold & Son caliber A&S1615 | Hand-wound | Diameter: 37 mm | Thickness: 4.4 mm | Frequency: 21,600 vph (3 Hz) | Jewels: 27 | Double barrel | Côtes de Genève | Hours, minutes, seconds, double power reserve indicator | Power reserve: 90 hours
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Watches with the Arnold & Son caliber A&S1615
A&S’s offering for Only Watch 2017 is this Arnold & Son Time Pyramid for Only Watch 2017. A double barrel with sapphire dial