Arnold & Son Luna Magna automatic watch with a 44mm 18 karat rose gold case with a black aventurine glass dial on a hand-stitched blue alligator strap. The Luna Magna is a 2021 Grand Prix D’Horologerie de Geneve (GPHG) award nominee. Featuring the world's largest 3D moon phase indicator. It has a 90-hour power reserve and is limited to 28 pieces worldwide. Domed sapphire with an anti-reflective coating on both sides Case back sapphire crystal with an anti-reflective coating on the inside Water-resistance 30 meters / 100 feet. Functions include hours, minutes, astronomical three-dimensional moon phases (one-day correction required every 122 years), and moon-phase indicator on the back.