Vacheron Constantin Patrimony Watch

9‑o’clock 24‑hour day‑night display. 316 steel case with 18K micro‑nano vacuum plating. Dial diameter 41mm, thickness 1.0mm. Imported 8217 movement, vibration frequency 21600 times per hour, 48‑hour power reserve. Quick‑release Italian strap. 3‑atm water‑resistance.