Our latest collaboration with Zenith features a modern triple calendar movement - and 4.5 billion-year-old meteorite.  This watch demonstrates the strength and versatility of the initial El Primero design while providing a silhouette that feels like a modern, well-made, and purpose-driven chronograph. It features a stainless-steel case measuring 38mm wide and 14mm thick and a dial enclosed with a raised sapphire crystal, calling to mind the acrylic crystals found on vintage El Primeros like the A386. Vintage-inspired aesthetics aside, one of the greatest strengths of this watch is how it maintains a streamlined appearance despite the added triple calendar functionality, largely achieved thanks to the strategic placement of the day and weeks above two of the chronograph subdials and the color-matched date neatly tucked away at the four-thirty position.