Waterproof Stopwatches

General-purpose LCD Digital Stopwatch times to 24 hours. Features include: single-action, time-out, cumulative-split, and continuous timing. Timing resolution is 1/100 of a second for the first 30 minutes, and then continues timing to 23 hours, 59 minutes, 59 seconds, with a 1-second resolution. O-ring-sealed and shock-proof ABS plastic case is ideal for lab and plant use....