The flagship YAMAHA 500Li Seascooter features the best in class power and speed. Designed for both professional and recreational divers this powerful Seascooter with 500 watts of power glides through the water at speeds up to 4.35mph (7km/h).Divers can spend more bottom time in the water by exerting less energy.• Run time up to 90 min with normal use• Rated to 130ft / 40m• Speed up to 4.35 MPH / 7 KM/H• 3-level rotational speed control• Battery level indicator• Superior flood prevention system• Automatic buoyancy adjustment system• Powered by high performance replaceable Lithium Ion battery• Weight only 21 lb / 9.5 kg including battery