Chaney Instruments Digital Alarm Clock with Green LED Digital alarm clock from Chaney Instruments; green LED display Large 1-4/5-inch high digits provides easy viewing; PM and alarm indicator lights Additional features include snooze function for reluctant risers and adjustable dimmer 9-volt battery back-up option for potential power outages; requires separate battery purchase Measures 3-3/8 by 7-1/2 by 3 inches and weighs 14-3/4 ounces