This Plastimo ship's clock with radio silence is designed in the familiar porthole model and combines classic shipbuilding logic with practical everyday use. The casing is made of solid brass and is available in two finishes: warm brass or matte chrome-plated brass. Both versions have the same solid dimensions with a 120mm casing, an 80mm dial, and an approximate build height of 50mm, keeping the clock compact yet clearly present on a wall, bulkhead, or dashboard. It displays time in a 24-hour format with large numerals from 0 to 12 and smaller Arabic numerals from 13 to 24. The dial features the traditional red and green radio silence zones, a classic maritime detail that refers to historical emergency and safety communication at sea.

What makes this model special are the four silent zones on the dial. These refer to the traditional periods of radio silence, intended to make emergency calls more audible. This gives the clock not only a functional nautical detail but also more character than a standard quartz ship's clock. The front features bevelled glass and can be opened from the front. This makes maintenance, battery changes, and time correction noticeably easier, especially when permanently mounted on board or in interior projects with a maritime signature.