Ladies Zenith Star Open Watch, 18kt yellow gold case (37.5mm diameter), bezel set with round brilliant diamonds, fabric strap with 18kt yellow gold triple-folding buckle, silver guilloche dial with a heart-shaped opening showing the escapement mechanism at 10 o'clock, yellow gold hands, and applied yellow gold Arabic numerals, power reserve indicator at 6 o'clock, El Primero #4021 self-winding mechanical movement with chronograph functions, scratch-resistant sapphire crystal, water-resistant to 30 meters.