GREAT FOR HOME OR CLASS: Simple visual timer with 3 coloured lights and an optional alarm provides visual and auditory cues for timed activities EASY TO USE: Set the green dial to the total time, and set the yellow dial as a warning time, then press the Start button to count down TIME DURATION: Set the timer for durations from 5 minutes up to 2 hours; 360 degree viewing allows everyone to see MULTIFUNCTIONAL: Facilitate independent time management skills; Use as a hand-washing timer for kids or as a countdown in timeout and more ADJUSTABLE VOLUME: Use the dial to adjust the volume or turn it off if you prefer visual timing Visual timer. Easy to use. Times up to 2 hours. Easy tabletop viewing with 360° display. Requires 3 AAA batteries (not included)., Manufacturer: Learning Resources Ltd