Self-winding mechanical movement. Caliber 240 LU CL C. Date by hand. Hours and minutes of mean solar time. Sky chart, phases and orbit of the Moon. Time of meridian passage of Sirius and of the moon.
Black sapphire-crystal disks for sky background and moon phases. Transparent sapphire-crystal disk for sky chart and Milky Way.
Rose gold. Sapphire crystal case back. Water-resistant to 30 m. Case diameter: 44 mm. Height: 10.58 mm.
Alligator strap with square scales, hand-stitched, shiny black. Fold-over clasp.