Incorporating the world's most precise high-frequency series-made calibre, this beautiful Zenith El Primero Chronomaster Power Reserve is a masterpiece of watch engineering. Embodying the Zenith spirit of daring, authenticity and pleasure, the unique El Primero movement has evolved to shatter the limits of precision. Fastened with a brown alligator strap with protective rubber lining, the 42mm steel case with polished bezel continues its sleek lines. Protected by domed sapphire glass with anti-relection treatment, the silver-toned sunray dial features an open aperture revealing the legendary beating heart of the El Primero movement. The faceted rhodium plated hands and markers are coated with SuperLuminova for excellent visibility in poor light, whilst the chronograph sub-dials are located at 3 and 9 with the power-reserve indicator at 6. A transparent caseback shows the El Primero automatic movement in action and the watch is water resistant to 100m. 03.2080.4021/01.C494