7" Brass Twenty Four Hour Clock and Barometer Thermometer comes with a Mahogany finish double stand. Military 24 hour nautical brass clock and barometer set is highly polished. The solid brass case has been doubly protected with a zirconium plating based on chromium plating. No polishing needed and will never tarnish or discolor. This quality brass 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.