Hydrogenerators adapted for use by boaters and cruises and long crossings racing practitioners. Available in 2 powers, 300 or 600 Watts, and two lengths, 610 or 970 mm, to meet the needs of each sailor. Light, compact, easy to install and maintenance free. Effective over a range of 2 to 10 knots, easy lifting. Power: 120W from 5 knots depending on model and size of the propeller (10A - 12V, -24V 5A) spar aluminum. Comes with the latest generation of 12-24 VDC converter auto-detected, 240 mm propeller (200 mm and 280 mm optional), helmet with cleat and mounting kit. 2 year warranty on hydro generator and converter.