The idea for Vetron was ignited at a car show, where the transparent hoods of high-performance engines revealed the intricate mechanics within. The question that followed — what if a watch could do the same, showcasing the artistry of its movement instead of hiding it — led to the brand's signature K9 glass watch case.

K9 crystal is chosen for its optical clarity and brilliance, giving the transparency the 360-degree viewing concept requires while keeping structural integrity. Shaping it into a heptagonal case leaves no margin for error: with seven intersecting planes even microscopic flaws are magnified, and a single misstep during cutting or polishing can cause fractures or structural failure, so achieving optical purity requires slow, heat-controlled finishing of every facet. Out of 1,000 crystal case blanks only 89 meet the brand's standards of clarity, strength and precision, which is why Vetron describes its exclusivity as a consequence of material science rather than choice.

Inside sits the in-house VT D89 calibre, a hand-assembled one-minute flying tourbillon of 153 parts with a 40-hour power reserve, running at 28,800 vph across 21 jewels in a 22.0 x 29.0mm movement 4.9mm thick. Fully skeletonised, with open-worked bridges and mainplates on display, it places the tourbillon at six o'clock as the visual centrepiece. The D89 is offered in limited executions including the 60-piece transparent-case D89V60 and the 29-piece violet-case D89V29. Vetron presented its timepieces at the Hong Kong Watch & Clock Fair in 2025.