Hysek was founded by designer Jorg Hysek — a man who spent years shaping the visual identity of brands like Breguet, TAG Heuer and Ebel before launching his own manufacture in Geneva. The Abyss, introduced in 2005, became the foundation of the brand's identity: a diver-inspired sports watch with a bold architectural case and a distinctive set of patented swivelling horns that allow the case to articulate naturally with the wrist. The AB4002A01 is the 40 mm limited edition chronograph variant — the most compact and refined expression of that design.

Reference AB4002A01 is a 40 mm stainless steel automatic chronograph with a brushed and polished case and Hysek's patented swivelling horn lugs for an exceptional fit on the wrist. The black dial carries a diagonal carbon-style guilloché pattern that gives it considerable visual depth, with silver-toned Arabic numerals and matching silver-toned screws at each hour position. Three subdials display a 30-minute counter at twelve, a running seconds register at nine and a 12-hour counter at six. A date window sits at three o'clock. The fixed black bezel carries a white Arabic numeral scale. The sapphire crystal sits above an exhibition caseback revealing the automatic movement within. The watch is presented on a black alligator leather strap with a stainless steel deployant clasp.

This Hysek Abyss Chronograph Limited Edition is in near mint condition and comes as a full set.