Omega Speedmaster Solar Impulse HB-SIA Titanium 321.90.44.52.01.001 with original box and authentication cards. This OMEGA Speedmaster HB-SIA Co-Axial GMT Chronograph honours the Solar Impulse project, which aims to fly around the globe powered only by solar energy. It features a black carbon fibre dial graced by a small seconds subdial, 30-minute recorder, and 12-hour recorder, along with a central chronograph and GMT hands. With its tachymetric scale, the black bezel is mounted on a 44.25 mm titanium case and presented on a titanium bracelet. At the heart of this numbered edition timepiece is the Co-Axial calibre 3603. Etched on the case back is the patch of the Solar Impulse HB-SIA project.