Zenith's Defy 21 is the brand's modern high-frequency chronograph, and the 2025 Chroma II puts it in white ceramic with a skeleton dial that leaves the movement architecture in clear view. The 44mm case and rubber strap give it a sharp, technical look, while the ceramic keeps the watch light on the wrist. Its automatic movement combines the chronograph with a power reserve display, which suits the Defy line's contemporary bent. It wears broad and angular, and the open dial adds depth without feeling busy.