Countdown, countdown meetings, competitions Countdown

Functions and features: 1, the countdown clock countdown can display time; 2, the countdown clock is displayed three times: when a bit, and sub-sub-ten bits. 3, "repeatable countdown preset time" arbitrarily set by the user; 4, regular time, you can control the bells ring out; 5, can be viewed at any time; 6, no external battery "may repeat the countdown of the preset time." (the "preset time") can keep the memory decade. 7, there go the standby power supply, no external battery ensures clock continue to go in case of power failure (but not shown). 8, when the view or edit "preset time", without affecting the normal travel time clock (countdown). 9, the instrument uses high brightness LED digital tube display time, day and night, you can clearly see the time (count down the remaining time). 10, with the "Start" key exit ports, can lead to tens of meters outside of the place (classroom or factory gate) of the wall clock control.