Three selectors randomly pick students, teams or numbers for class-participation and activities. Countdown timer, alarm clock and stopwatch are for timed or clocked activities. Dual LCDs with blue backlight (large LCD is 2¾" x 7½") display date, time and indoor temperature and provide programming prompts. Features volume control, backlight and LCD on/off, pullout easel stand and hole for hanging. Runs on six AA batteries or adapter (not included). Overall size: 9½" wide x 6⅝" high x 1" deep.