The Pyramid 4in x 4 Digit Red LED Digital Wall Clock is designed for maximum visibility with its extra - large 4" high numerals and ultra - bright red LED display, making it ideal for long hallways, offices, warehouses, schools, and hospitals. This sleek, low - profile clock features a tinted non - glare lens and a black frame, ensuring that the time is easily readable from distances of up to 250 feet. It displays hours and minutes in a 4 - digit format (00:00) and can be set to either 12 - hour (AM/PM) or 24 - hour (military) time format. The clock plugs into a standard wall outlet and comes with a PM indicator light. With a limited 3 - year warranty, this clock is a reliable choice for any environment that requires clear timekeeping.