SelfSet Clock is programmed to change for Daylight Savings in your area. Clock requires no radio signal so it's ideal for hard-to-reach areas of a building. The shatter-resistant lens is UV-protected. Design features a black frame, white dial, blacknumerals, black hour and minute hands, and a red second hand. Biodegradable body is made with recycled material. Clock runs on one AA battery (sold separately).