Traceable water-/shock-resistant stopwatch 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, then continues timing to 23 hours, 59 minutes, 59 seconds, with a 1-second resolution. As a chronograph, the unit displays time-of-day in hours, minutes, and seconds, AM/PM, date, and day of the week. Also has a time-of-day alarm. Tactile-feel, click switches provide a positive action. Accuracy is 0.01 percent. Digits are 1/4-inch-high. Measures 2-3/8″ length by 2-1/8″ width by 1/2″ thick and weight is 1 ounce. To assure accuracy an individually serial-numbered Traceable Certificate is provided from our ISO 17025 calibration laboratory accredited by A2LA. It indicates traceability to standards provided by NIST (National Institute of Standards and Technology). Supplied also with, 2-year always-on battery and lanyard.