Not sure what NK Speed Coach is right for you? See our comparison here (SPEED COACH COMPARISON)
The original on-the-water OC performance monitor, the SpeedCoach OC 2, offers athletes accurate, high-contrast information about speed, cadence, and glide in a completely waterproof package. Use with an impeller on moving water (OC 6), or switch to GPS mode for wireless splits and distances.
The Training Pack features now come standard. Program any workout ahead of time, start and record training and race pieces "on the fly", and upload data wirelessly to a computer or mobile device for deeper insights over time.