Wait, Why Is the Cartier Tank Such a Big Deal? “I don't think there's any watch more important than the Cartier Tank,” says Kevin O’Dell, a vintage watch dealer and avid Cartier collector.

The right watch will be both practical and chic, and if celebs are anything to go by, it seems Cartier is the only way to go. Currently available at Amazon for £50.95, the Sekonda Monica comes in ...