Note: The battery is not included and the battery needs to be purchased separately.When the ship is driving, there is no motor sound, and only a small amount of water waves are very small.This set requires a 12v lithium battery pack that requires 30A of current to drive.Use 3s 11.1v lithium battery, pull 8kg, can pull 2 ??meters high three-layer floating net length 100 meters.Suitable for installation of hulls with a length of 0.8-1.4 m. The solenoid valve can be remotely controlled to release the net or the rope.Remote control Infinitely variable speed, you can control the boat, forward, backward, left turn, right turn.The farthest remote control is 400 meters away.The motor is a brushless underwater motor, and the waterproof internal coil is fully filled with rubber and stainless steel bearings. Both seawater and fresh water can be used.The water pump is used for water circulation to reduce the temperature of the electric stern (stern water - water pump - ESC 1 - ESC 2 - discharge hull)The remote control is six channels. 1 and 2 channels are plug-in, the 3456 channel can be plugged into the servo, or the controller can be used to control the solenoid or light control.Package includes:Thruster x 1 pairBrushless 40A ESCx 2Six-channel remote control x 1Electrical switch x 1Water pump x 1Pump seat x 2Switch x 1Water scraper x 1M8 drain nozzle x 11 male 2 bus x 2Jst Y line x 14x7mm water pipe x 2 metersCable tie x 1set100 Percent satisfaction of the refund / exchange: High quality and 100 Percent satisfaction with a money-back .If you are not satisfied with the product, please contact us.To provide satisfactory service.