This stopwatch features 1/100-second resolution, 24-hour timing range; 2-memory recall of finish times, and Pro Action snap-back push buttons that offer great feel. The display is twice as large as that of most stopwatches for easy reading of results. Use the SC-539 to track the progress of fitness, rehab, or lab activities. Offers simple operation for volunteers, and umatched quality for coaches, trainers, and professionals.