Digital reading with large 30mm high main digit and 25mm high secondary digit display. Counts up or down from 23 hours, 59 minutes and 59 seconds to 1 second, alternatively counts up from 0.01 seconds to 59 minutes 59 seconds or 9999.9 seconds or 0.01 minute to 19999.99 minutes. A loud audible alarm is emitted at the end of the timed period. Lap facility available on countup feature. 12/24 hour clock, day and month displays and a daily alarm are also selectable. Supplied with 1.5V C battery.