Zenith has released the El Primero Stratos Flyback Rainbow L.E. watch, an update of the original Zenith Rainbow Flyback chronograph from 1997. Originally built based on technical specifications from the French Air Force, this update maintains the sporty looks and bright color scheme but ups the ante with a black case made of Alchron — a durable yet lightweight titanium and aluminum alloy. The watch is powered by an in-house El Primero 405B automatic movement with a 50-hour power reserve. A lightweight black rubber strap completes the sporty look. Just 250 examples of the Flyback Rainbow L.E. are available exclusively at Zenith boutiques.