Brand: Citizen
Model: NH9131‑73A
Movement: Automatic mechanical (Caliber 8229), ~40 h power reserve
Case & Dial: ~40 mm stainless steel case, white dial with open‑heart display, crystal glass, transparent case back
Water Resistance: 50 m (5 bar)
Features & Appeal: Elegant open‑heart design, blue hands and indices, see‑through back, reliable Japanese movement, versatile dress style





