Sonic welded case insures excellent water resistance. Previous 100 lap times are stored in memory so there is no need to look away from a test to make notes. Counts upto 10 hours in 1/100 second resolution. Large display simultaneously shows total elapsed time, split time, current lap time and lap counter. A unique function is the stopwatch's ability to calculate average strokes, beats, or pulses per minute based on the timing of 3 sample strokes. Also features a clock and a calendar. Button cell battery included. Weight 2.8 oz. Dim: 2 7/8" x 3 1/4" x 3/4" Also available with NIST traceable certificate of compliance.
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