The AmpliVox S1321 Clip-On Clock Timer is a handy electronic timer and clock for meeting rooms, conference centers and anywhere a timer is necessary. The LCD displays time-of-day in the clock mode, time elapsed in the stopwatch mode and time remaining in the alarm mode. The timer counts up to and down from 24 hours with a 1-second resolution. An alarm sounds for 1 minute at the completion of the countdown cycle and also displays elapsed countdown. The S1321 timer includes a back magnetic clip, a built-in stand and one 1.5 V button cell battery.