Piaget Emperador cushion-shaped watch
The remarkably beautiful and complex sapphire crystal case back of the Piaget Emperador cushion-shaped watch spans a full 46.5 mm in diameter and is designed to accommodate an exceptional ultra-thin perpetual calendar movement measuring just 5.6 mm thick. The date and day are displayed on retrograde counters. Thanks to a dual time-zone function, the user no longer needs to modify the main time and thus upset the perpetual calendar when travelling. The particularly readable dial is superbly finished.