Fast becoming our most popular timer, the Time Timer PLUS packs all the features that have made our timers the first choice of teachers, students, parents and professionals into a new design that's as sturdy as it is useful.Ideal for active kids or a day full of meetings, the Time Timer PLUS features a rugged case and durable clear lens to protect its patented red disk. And the new on-the-go handle makes it easy to take the timer anywhere you go.Benefits:Teaching children the concept of elapsed timeMaking homework and practice time more productiveReducing conflict in family and household routinesManaging the stress of transitions by showing " how much longer" Empowering teachers to teach instead of constantly monitoring behaviorIncreasing performance on tests and in the workplaceKeeping meetings on time and moving forwardTranscending language and culture barriersFeatures:Volume control dial for those times you need a louder tone and those when you prefer silence.Lightweight anti-static diskSilent operationSize: 5.5" by 7" One AA battery required for operation (not included).