Zenith El Primero Stratos Flyback Watch
45mm steel case, transparent sapphire glass back, unidirectional rotating steel bezel set with a black aluminum disk, black dial, automatic movement with hours and minutes in the center, small seconds at 9 o'clock, date window at 6 o’clock, 30-minute chronograph counter at 3 o’clock, 12-hour chronograph counter at 6 o’clock, approximately 50 hours of power reserve, steel bracelet, integrated clasp buckle.
Zenith El Primero: Stratos Flyback Watch
45.5mm steel case, 14.10mm thick, transparent sapphire glass back with oscillating weight côtes de genève pattern, unidirectional rotating steel bezel set with a blue ceramic disk, domed sapphire glass crystal with anti-reflection treatment on both sides, blue sunray dial with hour markers and hands faceted, rhodium-plated and coated with superluminova sln c1, el primero 405 b automatic movement with hours and minutes in the center, small seconds hand at 9 o'clock, telemetric scale, date indication at 6 o'clock, 3-counter chronograph with flyback function: central seconds hand, 30-minute counter at 3 o'clock, 12-hour counter at 6 o'clock, approximately 50 hours of power reserve, steel bracelet, triple folding clasp buckle. Water resistant to 10 atm.