Welcome to the store! It is waterproof and works well in water, JR connector suitable for plugging into the receiver, plug and play. Under the condition of 5V voltage, the pump works continuously for 15 hours and pumps water continuously. Let it work normally, the temperature will become warm, but it belongs to the normal range and does not affect the use. The pump voltage for the 370 motor is 3-6V, which can be directly connected to the receiver to get electricity. Through the step-down module, you can directly plug in a 2-6S (7-28V) battery to step down the 5V water pump. Item Type: RC Boat Water Pump Material: Metal Color: As Picture Shown Total Length: Approx. 73mm/2.9in Motor Length: Approx. 24.4mm/1.0in Pump Head Diameter: Approx. 28mm/1.1in Water Outlet Length: Approx. 7.8mm/0.3in Water Outlet Diameter: Approx. 4.3mm/0.2in Weight: Approx. 66.0g/2.3oz Waterproof Pump: You can throw the pump directly into the water to work JR Connector: This connector is suitable for direct plug-in use; After actual testing, the water pump works continuously for 15 hours under the condition of 5V voltage to pump water without interruption. If it is put into normal operation, the temperature will become warm, but it belongs to the normal range and does not affect the use. Operating Voltage: Rated 6V, use 3-6V Voltage: 3V Pump Water Flow: 1.1L/min Pump Water Flow: 300ml/min Voltage: 6V Pumping Water Flow: 1.8L/min Pumping Water Flow: 600ml/min Usage Range: Silent 370 water pump, suitable for installation on remote control boats that require water-cooled engines and do not have water absorption steering gear. The pump voltage for the 370 motor is 3-6V and can be directly connected to the receiver to obtain power. Through the step-down module, it can be directly connected to a 2-6S (7-28V) battery step down 5V power water pump. It is suitable for remote control aircraft carriers, warships, battleships and other series of remote control ships that require water-cooled engines and ESCs. 1 x Water Pump