COUNTDOWN TIMERS HAVE MANY PRACTICAL USES: They can improve time management, increase productivity with daily tasks and help those who are too young to fully understand the concept of time. They are the perfect tool to help children understand the passing of time visually. Visual timers are great for managing playtime, bedtime routines, setting timeouts, assist in the countdown to transition to a new task and many more things. SUITS MANY NEEDS: These countdown clocks can help those with special needs. As the time elapses, the bright red disc disappears. The visual design aspect of this timer helps ease transitions and encourages independence and increased productivity for people of all abilities. The large size makes this timer prefect for teachers, in special or early education or those using it during therapy sessions. 3 MULTIPLE PLACEMENT OPTIONS: 1) Our large timers features two powerful magnetic backing panels making it ideal to place on refrigerators, whiteboards, and more! 2) The two foldable legs on the bottom can open up for placement on flat surfaces like desks and countertops. 3) These timers are also easily wall mounted. EASY TO USE – Simply turn the control knob clockwise to expand the bright red disk—making it easy to watch the time count down visually. Note: You MUST activate the timer before each use by turning the control knob clockwise past the 55-minute position, then turn it counter clockwise to the desired time. NO BATTERIES REQUIRED- These premium mechanical countdown is completely mechanical—no batteries needed! Please note this timer has a loud mechanical ticking sound when in use. For this reason it is not suitable for ticking sound sensitive users. Please take a look at our range for silent options. Approximately 19cmx19cm large face.