The Citizen CA45 is a reference code identifying a specific family of Eco-Drive chronograph watches aimed at men. Citizen, founded in Japan in 1918, is best known for its Eco-Drive technology — a solar-charging system that powers the movement from any light source, eliminating the need for battery replacements. The CA45 series sits within that Eco-Drive lineage and is built around a multi-function chronograph complication.
Eco-Drive and the chronograph movement inside the CA45
Every CA45 runs on Citizen's Eco-Drive movement, which converts both natural and artificial light into energy stored in a rechargeable cell. In practical terms, a fully charged CA45 will continue running in complete darkness for several months. The chronograph function adds a stopwatch mechanism to the timekeeping — typically measuring elapsed time in fractions of a second — making the CA45 more than a simple three-hand watch. These movements are quartz-regulated, so accuracy sits within a few seconds per month without any manual winding or setting.
Case, dial, and wearing considerations
CA45 models are designed for men and tend toward a sport-dress aesthetic — substantial enough for casual and active wear, yet dial-legible and refined enough for business-casual settings. Chronograph pushers sit at the two and four o'clock positions on the case, a standard layout that keeps operation intuitive. When choosing between variants, pay attention to dial colour and bracelet or strap material: stainless steel bracelets add weight and durability, while leather or rubber straps change the wearing character considerably. Water resistance on Eco-Drive chronographs in this family is generally rated for everyday splashes and rain, but is not intended for swimming or diving.
Citizen CA45 watches in our selection
Our CA45 selection is a focused group of men's watches, priced from around USD 275 to approximately USD 450 — a range that reflects Citizen's position as a serious mid-market manufacturer rather than a fashion label. If you want to explore Citizen's broader output, the full Citizen range covers everything from entry-level Eco-Drive pieces to the brand's more technical Promaster lines. For dive-oriented alternatives within the brand, the Citizen Promaster Marine is worth considering, and for a different movement type, the Citizen NB60 offers an automatic option. Shoppers comparing across manufacturers can also browse the wider watches selection for context.
Is Citizen a good brand for a chronograph watch?
Citizen is a genuine watchmaker — it produces its own movements in-house, including the Eco-Drive calibres found in the CA45. The brand is not a fashion label that outsources production; it has manufactured watches and movements in Japan since the early twentieth century. For a solar-powered chronograph at this price point, Citizen is one of a small number of brands that can offer proprietary movement technology rather than a commodity quartz module.
