Projects large numbers for easy classroom viewing. Counts up to or down from zero. Timingcounts can be paused or repeated easily. Audible signal gives pre-warning before end of timing count. In chronograph mode read elapsed time while timer keeps running. Clock mode gives choice of 12 or 24-hour format turned off. Battery-saver feature lets clock run while display is turned off. One-year warranty Can be placed in stand-up position on desktop for individual or small group use One-year warranty PLUS... NEW FEATURES... Self-contained projection... NO overhead projector needed. QK-SET key to quickly set timer to 5 10 15 etc. minutes RANDOM NUMBER generator mode; selects numbers from 2-150 AUTO-REPEAT option to start next timing session immediately using same set time. REMINDER setting to remind students at one-minute intervals as time elapses. Powered by AC/DC Adapter or batteries (both included