Audemars Piguet Royal Oak Double Balance Wheel Openworked /Root/Start/Hublot/Big Bang The Omega Speedmaster '57 Co‑Axial

The Omega Speedmaster '57 Co‑Axial Master Chronometer Chronograph (Ref

Reference 2-39-47-02-01-04 combines the 42 mm Rose Gold case of the Sixties with a black dial and a date display

The stainless steel bracelet with folding clasp sits comfortably around the wrist and underscores the refined yet assured presence of this timepiece

The small seconds at nine o'clock completes one rotation every ten seconds

Four automatic watches are wound

Audemars Piguet Royal Oak Double Balance Wheel Openworked /Root/Start/Hublot/Big Bang The Omega Speedmaster '57 Co‑AxialAudemars Piguet Royal Oak Double Balance Wheel Openworked (Reference 15407ST. OO. 1220ST. 02) Reference 15407ST. OO. 1220ST. 02 brings the skeletonized double balance wheel calibre into a stainless steel case the most accessible version of this elaborate construction. The dial is rendered in skeleton metal. Two balance wheels on a single axis share the oscillation and mutually compensate for disturbances. Central seconds, luminous hands, and luminous