Functions include single action, time-out, interval split, cumulative split, and continuous roll-over timing. Resolution is 0.01 seconds. Times to 9 hours 59 minutes, 59 seconds, and 99 hundredths. Size is 2-1/2" x 3" x 3/4" and weight is 2-1/2 ounces. Lanyard is 40". Comes with 4-year battery. Supplied with individually serial numbered Traceable® Certificate.