This Citizen watch is perfect for active men who are always on the go. Whether you're swimming, running, or just going about your daily routine, this watch can keep up with you. It uses Eco-Drive technology, which means it gets its power from light, so you don't have to worry about changing batteries. The chronograph function allows you to time your workouts or other activities accurately. The watch has a 45mm case diameter, 12mm thickness, and 20mm band width, making it a substantial yet comfortable accessory.