Porthole ship´s clock with battery-powered quartz movement and brass case with a toggle closure that makes changing batteries or adjusting the instrument very easy. White dial. A barometer and a comfortmeter augment the series. All models are available in brass cases: either high-gloss polished and colorlessly lacquered, high-gloss chrome-plated, high-gloss gold-plated, or matte nickel-plated.