Timer counts down from 99 minutes, 59 seconds in 1 second increments with 3 button ease and big-digit visibility. Automatic memory resets the display to the last programmed time- ideal for repetitive tests. Quartz-crystal accuracy to 0.01%. Three-quarter-inch-high digits are readable from 20 feet. Alarm sounds for 30 seconds. Weight is 2 ounces. Supplied with 2-year AAA battery, magnet, stand, clip, and Traceable® Certificate.