This Traceable® water- and shock-resistant stopwatch times to 24 hours. It features single-action, time-out, cumulative split and continuous 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. Quartz crystal accuracy is 0.01%. The water-resistant, O-ring-sealed, shock-resistant ABS plastic case is ideal for lab and plant use. As a chronograph, the stopwatch displays time-of-day in hours, minutes and seconds as well as a.m./p.m., date and day of the week. It also features a time-of-day alarm and comes with a two-year silver oxide battery and lanyard. Timer includes a Traceable® certificate (issued by an A2LA-accredited, ISO/IEC 17025-certified lab), which documents traceability to N.I.S.T. standards. One-year warranty. Dimensions (W x H x D): 21⁄8 x 23⁄8 x ½ in. Wt. 1 oz.