7" Maritime 24 Hour Clock and Hygrometer Thermometer set with Mahogany stand. This beautiful brass Marine set captures the essence of the nautical maritime ships. The solid brass portholes have been doubly protected with a zirconium plating based on chromium plating. No polishing needed and will never tarnish or discolor. This quality set would be an excellent choice for any home or office to add classic nautical flair and functionality. The clock works with a quartz movement which requires one AA battery. The movement is accessed through the working, hinged porthole. Three year warranty