ZENITH G.F.J. Calibre 135 Automatic 39.15mm Watch Halo revealing its intricate mechanisms through

revealing its intricate mechanisms through the clear sapphire crystal

5" adjustable

With a beating heart powered by the latest El Primero 3610 automatic

25 mm model features a blue sun-brushed dial

ZENITH G.F.J. Calibre 135 Automatic 39.15mm Watch Halo revealing its intricate mechanisms throughFollowing the award winning revival of the G. F. J., ZENITH unveils a new chapter in this collection dedicated to pure chronometry. Named after the initials of founder Georges Favre Jacot, the G. F. J. is not a commemorative gesture, but a statement of intent: a return to the very foundations of precision watchmaking. First introduced with the rebirth of the legendary Calibre 135 and honoured with the Chronometry Prize at the Grand Prix dHorlogerie de