Measuring 43.5 mm × 31.4 mm with a slender 7.3 mm thickness, the Santos-Dumont WGSA0077 is crafted in yellow gold 750/1000 and powered by a quartz movement. The case is fitted with a sapphire crystal and a beaded crown set with a synthetic blue cabochon-shaped spinel, lending a jewel-like accent to the profile.
The blue satin-brushed dial carries a sunray effect and is dressed with golden Roman numerals alongside golden-finish steel sword-shaped hands — a composition that balances legibility with an unmistakably Cartier elegance. Water resistance is rated to 3 bar, approximately 30 metres.
The watch is presented on a blue alligator-skin strap secured by a yellow gold 750/1000 ardillon buckle, completing a cohesive and luxurious pairing that honours the Santos-Dumont's storied heritage.