Piaget's latest top-level real flywheel, new face, case: 40mm diameter, polished by CNC top technology, each case is electro-gold

Piaget's latest top-level real flywheel  Case: 40mm diameter, polished by CNC top-level craftsmanship, each case is processed with electro-gold.  Mirror surface: sapphire crystal mirror surface, with blue coating. Transparent effect, looks more transparent.   Movement: Electric gold tourbillon manual winding movement, kinetic energy 120 hours.  Waterproof: 50 kg vacuum waterproof test.   Art, craftsmanship, high-end atmosphere, the best choice Piaget tourbillon.