Seiko Seafoam Wall Slave Clock – Battery Operated, 1990s

This Seiko Seafoam Wall Slave Clock came from a larger slave clock system. These systems helped keep accurate time across multiple rooms or areas by connecting each clock to a single master unit. As a result, every clock displayed the same time. Schools, ships, and businesses often rely on these systems for synchronized operations.

Seiko manufactured this clock in the 1990s. It originally operated through a wired connection but now runs on a single AA battery. The metal case features a seafoam blue enamel finish, and the white face displays bold black numerals and tick marks. The word “Seiko” appears just above the 12. Some corrosion is present on the housing, and we’re offering it as-is.

At the top, a thumbscrew lets you open the case and access the battery compartment easily.

Features:

• Seafoam enamel metal case with a white face and black numerals
• Runs on a single AA battery (converted from wired system)
• Easy battery access via thumbscrew on top
• Used in synchronized timekeeping systems on ships and in schools

Looking for more vintage nautical wall clocks? We’ve got plenty of options in stock.