Polaris II E 870

Sold alongside, not instead of, the Polaris: oval case by Nardin or Narval of Le Locle, external rotating bezelBezelThe frame surrounding the crystal at the front of a watch. in place of the third crown, single-piece resonating caseback, bold colours, and the full-rotorRotorAn oscillating weight that uses wrist movement to wind an automatic watch’s mainspring. calibreCaliberThe designation of a watch movement, identifying its design or movement family. 916. “Polaris II” was the US name.