The Chronograph Ultra-thin Grande Complication's avant garde shape-within-a-shape design had the crowds swooning at watch love-in SIHH in January. Part of the Swiss brand's all-new Harmony collection, only ten of these platinum watches will be made. Each is delivered with a magnifying glass so its new owner can ogle all 459 teeny tiny components squeezed into a movement just 5.2mm thick.

It's the ideal buy for those who like their watches technically flawless, unique and expensive. The price remains a mystery, which, in our experience, is never a good sign…