Large Display Digital Stopwatch. Large LCD for good visibility. Rugged ABS plastic case. Built-in stand. Counts to 24 hours in 1/100th second resolution for the first 30 minutes. Split interval, clock, and calendar functions. Comes with leatherette case and a "AA" battery. N.I.S.T. traceable certificate of compliance available. Dimensions: 3¾" x 2½" x ¾" Weight: 2.6 oz.