The SmartScan 18283 Traceable 4-Channel Big Digit Timer 5004 is a digital timer with four channels and a large display. It features memory recall, audible alarms, NIST traceable calibration, and a clock function. The timer includes batteries, a stand, and a magnetic clip, all contained in a protective case. It has a digital LCD screen and can be set for a minimum of 1 second up to 24 hours.