* This device for faster swimming at both home or swimming school.
* Improves freestyle swimming technique, power & stamina.
* Precise swim Power Meter for motivation, performance monitoring and testing.
* Measures time, distance and power.
* Great for improving sustained swim power, endurance.
* Big LED display.
* 10 speeds, 50-500N.
* Simulated butterfly, backstroke, breaststroke, freestyle.
* Built-in battery, it can be used as power bank.