Zenith El Primero Stratos
Stainless steel Zenith El Primero Stratos Flyback, circa 2011, is a jumbo 45.5mm self-winding sports watch, water-resistant to 100 meters, the screw-down back with see-through sapphire crystal to the automatic movement, elongated rectangular pushers, black ceramic outer bezel with etched Arabic numerals and Zenith matte-and-polished steel bracelet with fliplock deployant. The black dial features applied steel luminous hour indexes, luminous steel baton hands and red-arrow-tipped chrono hand, constant seconds, 30 minutes and 12 hour registers, and date aperture at 6 o’clock. The movement is Zenith El Primero Caliber 405B automatic movement, with a a flyback feature that allows the user to re-start the chrono using the pusher at 4 o’clock. There is a 50 hour power reserve and a high beat, 36,000 bph movement.