“Polar / black”
The Explorer II 16570 is the long-running 40 mm reference that settled the modern formula: fixed steel 24-hour bezel, black or white Polar dials, sapphire crystal, Oyster bracelet, and Caliber 3185 with late Caliber 3186 examples across the tritium-to-Luminova/Super-LumiNova dial eras.
Open in The Dial Atlas