Manufacturer: Seiko Time Creation Inc.
Model: WDC-402 

Overview

In addition to its single usage, we uniquely design this weekly digital clock so it can form an original world time clock when multiple units are applied. We eliminate the need for a master clock by using a twin synchronous system. (A power box is required when multiple clocks are used to create a world time clock.) You can install the clock either as a wall-mounted or recessed unit, and we can prepare a map panel according to your design upon request.

Specification