Max time 99 min 59 sec Power: LR1130 Button Cell 1 x timer If you would like to reset it, and hold MIN and SEC together to reset the timer to 0 Come with Put the battery in Big screen to show the correct time in minutes and seconds Press SEC button to set the second Size: 7.0 x 5.3 x 0.8 cm , high quality Press MIN button to set the minute for cooking, examination, sun bathing etc The timer will ring when the count-down is finished 3 button includes START / STOP button, MIN button and SEC button / STOP button to start or stop the timer Simple to operate LCD home kitchen chef mini count-down digital timer If You Would Like To Reset It, And Hold MIN And SEC Together To Reset The Timer To 0 Big Screen To Show The Correct Time In Minutes And Seconds SEC Button To Set The Second Put The Battery In Size: 7.0 X 5.3 X 0.8 Cm