In this ingenious watch named Surya, by Frédéric Jouvenot, the time is indicated not by hands, but by petals. At noon, all the petals are green; every hour, a petal changes to a dark grey, until midnight when they are all grey, and the cycle begins again. Minutes are shown by an indicator rotating on the fixed central disc. The petal-flicking mechanism is housed in an inner case, 12 mm in diameter and 5 mm high, at the centre of the dial. The petals are in tsavorite. More info fron www.fjouvenot.com

The watch has been selected for the 2014 Grand Prix d’Horlogerie de Genève (GPHG), for which results will be announced on 31 October 2014.. It will be in the “Ladies High-Mech” category, one of the 16 categories in the competition, and it is eligible for the “Aiguille d’Or” Grand Prix for the best watch in the show, and the Public Prize, open to votes from the online public at www.gphg.org.