This is a mechanical clock where the time changes through the movement of a flip panel (cover plate). It features the logo of the Miike Coal Mine New Labor Union. The item has undergone replacement of deteriorated gears and connectors, and re-greasing, and it has been confirmed to function normally for about a full day. The alarm and snooze functions have been tested and work, but due to its age, it may not sound exactly as specified. Additionally, as it is mechanical, you can hear the operation sounds of the motor and flip panels.

There may be deterioration in parts that have not been replaced, and it is unclear how long it will function after shipment.