The last of Harry Winston‘s iconic Histoire de Tourbillon timepieces is a real showstopper: four tourbillons combined in a single movement, presented in a fascination, sophisticated, whimsical style.

But, then, it’s a culminating piece, and a swan song too. The Harry Winston Histoire de Tourbillon 10 is the fourth and final watch in the luxury brand’s Histoire de Tourbillon Series that launched in 2009.

Similar to past designs, the intricate timepiece pushes the boundaries of both design and innovation. However, unlike any other design—ever—this wristwatch boasts four tourbillons, and we’re not talking about two bi-axials paired together. Symmetrically arranged, each of the four individual tourbillons is nestled in the rectangular case.

The result is visually arresting, yes, but also acutely timely: the quad-tourbillon power guarantees wearers will never be lacking the most accurate telling of solar time.

Limited to just 10 examples in each style, Harry Winston’s new timepiece will be available in 18k rose gold or 18k white gold; a single-example piece, the Winstonium platinum alloy design, will also be offered. Prices start at around $694,000.