Skilcraft Self-Set clocks with Slimline frames are programmed to automatically set to Daylight Saving Time without the use of a signal. They are ideal for use in facilities where a radio signal may not reach radio controlled clocks. Daylight savings change feature can be turned off when used where time doesn't change. Easy to read bold, black, Arabic numerals, black hour and minute hands with red second hand. Frames will biodegrade within an average of 2 years in a landfill and contain 30% post-consumer recycled content. Clear lens is shatter-resistant and UV-protected. Hanging hardware included. Requires one AA alkaline battery (not included).