ITS MICROCOMPUTER CHIP PERMITS SETTING 4 SEPARATE CHANNELS SIMULTANEOUSLY IN ANY COMBINATION OF COUNTDOWN OR COUNT-UP STOPWATCH SET ANY COUNTDOWN TIME FROM 99 HOURS 59 MINUTES 59 SECONDS TO 1 SECOND WITH AN ACCURACY OF 001 WHEN ZERO IS REACHED THE TIMER STARTS COUNTING UP TO SHOW TIME ELAPSED SINCE ALARMING MEMORY RESETS DISPLAY TO PREVIOUSLY PROGRAMMED COUNTDOWN TIME AT THE TOUCH OF A BUTTON TIMER IS PROVIDED WITH A SERIALIZED TRACEABLEÂ CALIBRATION CERTIFICATE INDICATING TRACEABILITY TO STANDA