HYT created a limited edition, especially for Mr Porter, the approx. $86,000 model debuted on the site on Monday. Like all of HYT’s hydro-mechanical timepieces, it features a fluid-based time display and runs on a combination of fluid technology and traditional mechanics. In short, the watches use liquids stored in capillaries to indicate the passage of time.

“The H1.0 x Mr Porter timepiece reflects HYT’s core belief in dynamic cooperation,” says Grégory Dourde, CEO of HYT Watches. “In the watch, this is expressed by the seamless collaboration between mechanics and fluids. Its sale on this retail channel unites online and offline in a reality that mirrors that of the world we live in. And like time itself, this is always on the move.”

The 48.8mm stainless steel model comes on a black rubber strap with a titanium folding-buckle clasp and features a black DLC coating with satin finishes and accents of red on the dial and side of the case, and Super-Luminova on the hour numerals, indexes and minute hand.

H1.0 Limited Edition Hand-Wound 48.8mm Stainless Steel and Rubber Watch Courtesy of HYT

Beneath its domed sapphire crystal, you’ll see a piston movement that includes a coated glass capillary that contains black liquid dye around each marker, which indicates the elapsed time. Another capillary with transparent liquid indicates a time yet to come. Where they meet is now. For additional indications, look to the subdials on the face of the watch, which display minutes, running seconds and the 65-hour power reserve.

The Swiss brand, based in Neuchâtel, has created a detailed user guide to explain the intricate functionality of the H1.0 model. Gear heads, this one’s for you.