Zenith El Primero

Used 2016 Zenith El Primero Chronomaster Open Power Reserve. It features a 42mm stainless steel case, a black dial with an open-heart aperture, and the famous El Primero caliber 4021 movement. This movement is known for its 36,000 vibrations per hour, 39 jewels, and a power reserve of approximately 50 hours. The watch is water-resistant up to 100 meters and includes a chronograph, hour, minute, second, and power reserve indicator. The open-heart design allows for a closer look at the movement