Japanese watchmaker Citizen recently held a night of cocktails, hors d’oeuvres and scientific discussion at its New York City flagship in celebration of the release of its latest and greatest timepiece, the Satellite Wave F900. For the event, they welcomed Brian Greene, a professor of physics and mathematics at Columbia University, and Oded Aharonson, professor of earth and planetary sciences at the Weizmann Institute of Science in Rehovot, Israel, who each gave presentations on the subject of the science and physics behind timekeeping and what truly makes a watch ‘accurate.’

The Satellite Wave F900 is dubbed the world’s thinnest light-powered GPS satellite-synchronized watch with the world’s fastest reception speed. The F900 builds off of the Eco-Drive Satellite Wave, launched in 2011 as the world’s first watch capable of syncing with satellites in space to display the precise time, and the Eco-Drive Satellite Wave F100 released last year. The new model features enhanced functions such as a chronograph and a dual-time display, allowing the watch to show the time in two time zones simultaneously.