1There are 3 modes: clock, stopwatch, timer (2 data sets), 99 minutes adjustment, which can meet your different needs. The electronic timer is suitable for nap, study time, duration of face cover, exercise, meeting, cooking time, parking time, medication time, etc. You will never miss important things again. Does not contain AAA batteries. Keep the battery far from children. 2The main functions of the digital timer, 99 minutes (1 second to 23 hours to 59 m-59 seconds) digital display, stopwatch timer, timer, memory/clock. 3The cooking timer has a wide range of applications, including learning time, face cover, sports, meetings, cooking time, parking time, medication time, etc. 4The kitchen timer has a default time setting. Press this mode to enter the viewing mode. After 2 seconds, press the start/stop button to set the clock setting (press to select the second setting, press the minimum setting, set by the hour), and then press the start/stop button to set the current time. 5Countdown timer Press this mode to set the stopwatch function. After pressing START/STOP, the counting process will start, after pressing START/STOP again, the stopwatch will stop. Press "Clear" to delete the recording. 6The magnetic countdown clock presses "Countdown 1" mode, press "Clear" to delete the last recording, set the specified time in seconds, minutes and hours, and then press start/stop to start the countdown.