This Finis pacing device uses beeps to help you set your stroke rate. Convenience and portability combine in the Tempo Trainer Pro to keep you in sync.
Features Include:
3 different modes:
Mode 1: Single beep in strokes per sec (0.02 seconds to 99.99 seconds)
Mode 2: Triple beep in strokes per sec (1 second to 9:59 minutes)