Use the setup instructions:    Stopwatch set use:    1. under the normal time display, press MODE key at a time, will see the state of a stopwatch, press the START button (right) once again and START the time, need to stop press START button once again, t

From May 23rd to May 25th, the Shanghai exhibition will meet. I hope you can visit it, and there will be a large number of new products at the same time. The customers who are interested should never miss it.

stopwatch are two main types of machinery and electronic, electronic watch and can be divided into two categories, three buttons and four buttons. The vast majority of PE teachers use more is electronic stopwatch, mechanical stopwatch in many places have 

The world table tennis tournament held in chengdu from the disturb sex divide, history repeat after, effect would be expected, the kingdom of withdrawal ping three live two exercises, in the end tied up with an apology letter, controversial temporarily co

1/ 100 seconds, in order to accurately time. Ms is 1/1000 of a second, microseconds is 1/1000000 of a second.    Stopwatch is a common measuring instrument. Can……

In these years, the streets of track and field events in our country constantly emerging, and the formation of certain range and lineup. Beijing, Nanjing, Xi'an and other places have held a number of "street" competition. To deal with the pe