The Zenith Chronomaster Open watch is powered by an automatic El Primero movement within a 39.5mm stainless steel case. The white partial skeleton dial has a 1/10th chronograph scale on the outer edge of the dial. It reveals an escapement window, in addition to a chronograph function with silver, gray, and blue subdials. The dial is protected by sapphire crystal. The blue rubber strap is secured by a stainless steel deployant buckle. Water resistant to 100 meters.