Type: mechanical watch. It applies to teaching.
Type: mechanical watchWith Pause functionDimensions: 10.5x8.5x5.5Main Technique Data:Working cycle: 0.6 secondSecond hand: 60 seconds / cycleMinute hand: 60min. / cycleMin. graduation: 0.2 secondEffective working time: 12hrWorking duration: >24hr
Stopwatch