The 24 hour timer can be used as a long term or countdown timer.For students, the digital timer is a good partner for homework practice.Plan your study time and improve your study efficiency.For cooking beginners, the kitchen timer is a good helper for learning cooking.For office workers, the timer is the perfect little alarm clock to remind you when to go to work and when to meet.For teachers, the stopwatch is a little teaching assistant during lectures. Maximum duration: 24 hours.Material: Plastic.Color: orange, black, blue, pink.Product dimensions: 8 x 7 x 1.5 cm.Display: 6 x 3 cm - Button: “Hour”, “Min and “Sec”;“ST” and “SP”, “Clear” and “Mode”.Contents: 4 digital timers Press the clock mode button to set the clock according to the time zone and time.(You can long press to set the hour, minute and hour).In clock mode, it cannot be cleared or paused and you can press "Clear" to turn off/on the sound. In the alarm mode, set the time you need, press the start button and the alarm symbol appears, it is the setting is successful (the alarm is set relative to the clock,and the alarm is set under the assumption that the clock corresponds to the correct one).In the alarm mode, press the “Start/Stop” button to turn off the alarm directly. In timing mode, press the "Start/Stop" button directly for positive timing.If you want to countdown, set the hour, minute and second, then press Start again to countdown.Countdown: The first time you press "Clear", it will enter the time set by the last countdown (when you need to reset to zero, remember to pause and then reset)