Description:
* Countdown guidelines: the maximum value is 1 second to 99 minutes, 59 seconds,
* Set the timing alarm: Press the MIN key to set the score; Press the SEC key to set the second; Press the START key to count down; At the fixed point, a beep will sound for 32 seconds/time.
* Clear the settings and touch the MIN and SEC keys at the same time. Equipped with "AAA" battery 1.5V (not included)
