Corum has released a new Admiral’s Cup Challenger called Day/Night. This twelve-sided case gives a sporty/chic look to this collection and the caseback is transparent to reveal the Corum automatic movement (CO 171). The Day/Night version features a second timezone and a day and night indicator integrated into the dial. There is 24 hours dual time zone that you can set up with the crown and the white indicator but there is also an independent day night indicator shown by the black/transparent sapphire disk. The case (48 mm) has been black vulcanized making the watch water resistant down to 300 meters. The dial has a Côtes de Genève finishing which is also present on the back of the watch (movement).

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