Seiko VS22B

The Seiko VS22B is a solar-powered movement manufactured in Japan, using a capacitor as its power source. It delivers accuracy of ±20 seconds per month and uses an MT920 capacitor (302324Y / Seiko 4020581) with a six-month power reserve when fully charged. The movement has two jewels and is part of the VS22 caliber family, succeeding the VS22A version while maintaining the same core specifications. It remains in production and is used by various brands offering solar-powered watches.