The Essence Leggera is an ultra-light high-precision timepiece. The 50g (1.76oz) case made of Carbon Fiber Composite was entirely developed in-house. Bezel and crown are made of scratch-proof Zirconium Oxide ceramic. Inside ticks the self-winding STP1-11 movement.Reference 0330.4.6339.714 has an 'Electric Blue' dial. It is fitted with a calf leather strap with a carbon fiber composite folding clasp with patented Micro-Adjustment System.