SPER SCIENTIFIC Water Resistant Stopwatch

Sonic welding ensures that case has excellent water resistance. 100-Memory model lets you keep your eyes on the test. Nos. 25044 and 25045 count by 1/100 second for the first 40 min., then by the second up to 24 hours. Large 5/8"H display. Features include lap function, alarm clock and calendar. Weight: 2.4 oz. Nos. 90352 and 90353 store previous 100 lap times and count up to 10 hours in 1/100 second resolution. The display simultaneously shows total elapsed time, current lap time split time and lap counter. Watch is capable of calculating average strokes, beat or pulses per min. based on timing of three sample strokes. Dimensions for both models: 2-7/8" x 3-1/4" x 3/4". Both models include a 1.5V button-cell battery and are available with NIST traceable certificate of compliance.