twenty5 seven countdown timer 7.5 inch; 60 minute 1 hour visual timer - classroom teaching tool office meeting, mechanical co

[ Visual Navy Blue Disc ] As time elapses the navy blue disc disappears. Large enough to see from a distance. Easy to keep track of time. Helps even the youngest to understand how much time is left. | [ Mechanical Timing ] You never need to replace batteries. Make sure to wind up the timer every time before setting countdown minutes. | [ Loud Audio Alerts ] Making it clear when time has expired. | [ Ideal Time Education Tool ] Best tool to help children understand the concept of time. Recommended for parents and teachers, especially special education and early elementary teachers. ?Not suitable for ticking-sound-sensitive users.? | [ Specifications ] Measures 7.5x7.5 inches. No batteries required. One-handed operation. Stands on its own / hanging on the wall / sticks to a magnetic surface.

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