Traceable* Waterproof/Shockproof and Waterproof Stopwatch

Features include: single-action, time-out, cumulative split, and continuous timing. Timing resolution is 1/100 of a second for the first 30 minutes, then continues timing to 23 hours, 59 minutes, 59 seconds, with a 1 second resolution. One unit is waterproof to three atmospheres. Supplied with certificate of traceability to NIST and a 2 year always-on battery.