The DB28 is the model that defined modern De Bethune, and the Tourbillon Deadbeat Seconds is one of its most technically ambitious versions. The 45mm case is polished Grade 5 titanium and only 12.6mm thick. Its patented floating lugs pivot to follow the wrist, so the watch wears much smaller and more comfortably than its diameter suggests. The dial pairs De Bethune's fire-blued finishing with a hand-engraved, inked sterling silver chapter ring, and a clearly defined seconds track, which is rare for a DB28, gives the deadbeat hand room to show itself.

Inside is the manually wound calibre DB2119, a movement that beats with two rhythms at once. The balance runs at 36,000 vph. A secondary escapement with gold escape wheels drives the seconds hand in exact one-second jumps, the "deadbeat" seconds long associated with precision regulators. The tourbillon cage, made from titanium, silicon and white gold, weighs only 0.18 grams and turns once every 30 seconds. It is regulated by De Bethune's patented balance wheel and in-house hairspring, and twin barrels give it a generous power reserve of several days.

Only a few dozen examples have been made since the model launched in 2012, and the DB28 Tourbillon Deadbeat Seconds is seldom seen on the secondary market. It is independent watchmaking at its highest level, combining scientific engineering with a design that could only be De Bethune.