The Longines logo and the 'HYDROCONQUEST CERAMIC' text.

The ad opens with the Longines logo, followed by text 'HYDROCONQUEST CERAMIC'. A water droplet is shown falling and interacting with the watch. Close-ups highlight the watch's features, including its bezel, dial with indices and hands, and the crown. Water splashes dramatically around the watch, emphasizing its water resistance. The ad concludes with a full shot of the watch, then the Longines logo again.