El Primero Chronomaster Power Reserve

The dial opening revealing the beating heart of the El Primero 4021 movement remains an authentic innovation. Above and beyond the aesthetic aspect, the opening provides a glimpse of the perfectly synchronous vibrations and the magic of the gear trains of what is universally acknowledged as the world’s finest series-made chronograph movement, the El Primero calibre. With its characteristic dial face enlivened by the power-reserve indication at 6 o’clock, this watch features the peerless charm of elegant timepieces and high-precision models.