*digital timers large display and 3 buttones, super easy to read and set up.*Classroom timer with Strong Magnetic back 2.0 retractable stand and hook for hanging, can be positioned in variety of locations, like table, blackboard, dry erase board and wall hooks.*Memory Setting: You do not need to set the countdown time every time, it will remeber your last time and you only need to press "ST/SP" button.* Press the mute button on the side to enter the mute modeWhen the desktop counts down to 00:00, only the five-pointed star will flash quietly and will not disturb others. Long press the button for more than 2 seconds to fast forward the time, which perfectly meets the needs of classroom and extracurricular activities, and provides a great countdown/countdown for teachers and children.*Click "Add to Your Cart" get these Perfect teachers & children timer for shower, homework, exercise, gym workout, games and reading.