1 blue and 1 green digital timer large display and 3 buttons, super easy to read and set. (battery not included) The maximum time is 99 minutes and 59 seconds, which perfectly meets the needs of classroom and after-school activities, and is an excellent countdown timer for teachers and children. The classroom timer comes with a strong magnetic back 2.0 retractable stand and hooks that can be placed in a variety of locations, such as desks, blackboards, dry erase boards, and wall hooks. Memory setting: You don't need to set the countdown time every time, it will remember your last time, you just need to press the "ST/SP" button. Click "Add to Your Cart" to get these perfect teacher and kids timers for showers, homework, workouts, gym workouts, games and reading.