Vulcain V-10

V-10 is a manual-winding alarm caliber produced by Vulcain since 1947. Measuring 12 lignes (27.7mm) in diameter, it contains 25 jewels among its 165 components. The movement uses twin barrels to separately drive timekeeping and the alarm function, beating at 18,000 vph with a 42-52 hour power reserve. Its Exactomatic system provides enhanced balance precision, and the alarm produces sound for approximately 20 seconds. The caliber remains in production, currently powering Cricket and DIDIXEIN models.