Waterproof to 40 meters Battery life 45~70mins The thrust is 8kgf, the power is increased by 14%, and the maximum speed is 1.8m/s Made of aerospace grade aluminum alloy and high performance carbon fiber composite. Excellent corrosion resistance, upgrade your equipment for better protection Multi-speed mode, three gears, switch at will, choose high, medium and low power modes, and control the diving rhythm at will