The Citizen AT2566-88E is a men's chronograph watch featuring a 43mm stainless steel case and bracelet. It utilizes Citizen's Eco-Drive technology, converting light into energy, eliminating the need for battery replacements, and offering a power reserve of up to 180 days. The black dial includes luminescent hands and indices for enhanced readability, along with a date display positioned between 4 and 5 o'clock. Additional functions comprise a 60-minute chronograph, 24-hour display, and a battery discharge indicator. The watch is equipped with a tachymeter scale on the bezel and is water-resistant up to 10 bar (100 meters).