Tank Louis Cartier mini 18-karat gold alligator watch

Cartier's 'Tank' watch was originally designed by Louis Cartier in 1917 - they're inspired by the military vehicles of World War I. Expertly crafted from 18-karat gold, this mini version is tipped with a sapphire glass crystal to match the blued-steel sword-shaped hands, which are powered by Swiss-made quartz movement. The glossy black alligator strap will become even more supple over time.