1 Blue & 1 Green digital timers large display and 3 buttones, super easy to read and set up. ^Maximum time is 99 minutes 59 seconds, meet the need of classroom and after-school activity perfectly, great countup / countdown timer for teachers kids. ^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. ^Click ""Add to Your Cart"" get these Perfect teachers & children timer for shower, homework, exercise, gym workout, games and reading.