Maitres du Temps, Chapter One Round Transparence: Laser-etched sapphire dial revealing a manual-wind mechanical movement with hand-beveled cut-out bridges and a precious metal finish chronograph bridge, one-minute tourbillon, mono-pusher chronograph, retrograde date indicator, retrograde GMT indicator, day of the week indication on roller, patented precise moon phase indication on roller. Maitres du Temps, Chapter One Round Transparence: Laser-etched sapphire dial revealing a manual-wind mechanical movement with hand-beveled cut-out bridges and a precious metal finish chronograph bridge, one-minute tourbillon, mono-pusher chronograph, retrograde date indicator, retrograde GMT indicator, day of the week indication on roller, patented precise moon phase indication on roller.