These handy sized timers are perfect for use by teachers and students. They can count up or count down and an alarm is sounded to say the time has been reached. Having dual power functionality they are always charged and ready to go. The push buttons have been designed for ease of use by children and the timers are intuitive to use and to reset. The timers can be used in numerous situations where a hands free time period needs to be set or measured such as in scientific experiments, for the timing of tests and a hundred and one other uses.