The Zenith Chronomaster Open 03.3300.3604/69.M3300 is a self-winding chronograph watch featuring a 39.5mm stainless steel case and a silver matte dial with tricolor counters and a transparent counter for the running seconds. It is powered by the El Primero 3604 automatic movement, offering a 60-hour power reserve. Functions include hours, minutes, small seconds, and a 1/10th of a second chronograph. The watch is water-resistant up to 100 meters and comes with an integrated stainless steel bracelet.