Blancpain Grande Double Sonnerie (2025)

Case is 47mm with a thickness of 14.5mm, in red or white gold, sapphire crystal front and back, water resistant to 10m. Dial side architecture in 5N gold with openworked bridges, sunray black-rhodium elements and polished blackened gold indexes. Movement is in-house manual-winding caliber 15GSQ beating at 4Hz with 67 jewels and 1, 053 components, combining grande and petite sonnerie with two selectable four-note melodies (Westminster and “Blancpain”), minute repeater, flying tourbillon with silicon balance spring and a fully integrated retrograde perpetual calendar with twin power-reserve indicators. Power reserve is 96hrs for timekeeping with around 12hrs of striking autonomy in grande sonnerie mode. Limited to roughly 2 pieces per year, built to order and highly customizable. Priced at approx 1.7m CHF