Citizen men's watch, model NH8391-51L mechanical self-winding with 8200 caliber movement (21600 oscillations per hour) 40-hour power reserve, case diameter 40 mm. It is built with a steel case and strap (total weight 137 grams), water resistance up to 5 bar. Green dial with date display.

- Movement: automatic mechanical
- Case diameter: 40 mm
- Case material: steel
- Band material: steel