[Methods]:

1, it is time that is time, minutes and seconds; press ST/SP key to start, then is time to stop; at the same time according to the minutes and seconds are recorded by digital time back to zero.

2, in the 0000 state. According to the key points set, in seconds seconds; key; set, according to the start / stop button to start the countdown. There are speed setting function, the slow setting is to press the number to move 1 times; fast setting that hold the key to do not let go, the number will be rapid forward.

3, according to the start / stop button to stop the countdown; at the same time according to the / sec button zero