At the press of a button, this big-digit timer displays countdown alarm time, stopwatch (count-up) time, and time of day (AM/PM and 24-hour format). Full keyboard (0-9 keys) makes entering times fast. High-decibel alarm sounds for 1 minute. Count down or up to 9 hours, 59 minutes, 59 seconds at one second increments. Accuracy is 0.01%. Individually serial-numbered Traceable® Certificate indicates timer's traceability to NIST standards. 3/4"-high digits may be read from 20 ft. Supplied with 2-year AAA battery and magnet on back. Size is 3 x 2-1/2 x 1". Weight is 2-1/2 oz.