This four-channel timer can time up or down to 99 hours, 59 minutes, 59 seconds with 0.01% accuracy, act as a stopwatch and give accurate time-of-day. A large LCD continuously shows time remaining. An alarm can be turned off manually or automatically silences after 1 minute and a “time is up” message flashes on the display. A magnetic back allows you to place the timer on lab equipment, or you can use the flip-open stand, spring fastener or lanyard hole. The timer is supplied with an ISO/IEC 17025 serial-numbered certificate to indicate traceability to standards provided by N.I.S.T. One-year warranty. Dimensions (W x H x D): 2¾ x 23⁄8 x 5⁄8 in. Wt. 1.5 oz.