Using the very portable KF4 for swimming training
- waterpolo30
- Apr 5, 2018
- 1 min read
Updated: May 10, 2018
Coach adjusted the countdown from 30 to 40 seconds. The countdown can be changed from 1 to 99 seconds.
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Updated: May 10, 2018
Coach adjusted the countdown from 30 to 40 seconds. The countdown can be changed from 1 to 99 seconds.
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