Use individually numbered keys to quickly set countdown time to any value up to 99 minutes, 99 seconds.

Stopwatch mode with time-out feature counts up to 59 minutes, 59 seconds, then automatically rolls over to zero to continue timing.

Unit incorporates a flip-open easel for benchtop use, a spring fastener for clipping to lab coat, and a magnetic back for use with incubators, refrigerators, ovens, and more. Rugged, chemical-resistant ABS plastic case.