We've had digital timers for the kids for quite a while, and use them when doing homework, counting down screen time or when getting ready for school.
But the ones we had were not very sturdy, their buttons were very small and the screen not as pronounced. So, since we knew what was needed, we identified these timers as the ideal ones.
They have large screens (5.5 cm x 4.5 cm) with a bold display for easy readability from anywhere and their buttons are very easy to use.
They can count time up or down from one to 100 minutes and a convenient magnetic clip on the back can allow you to clip it to a belt or backpack.