Six Channel Electric Powered RC Sea Wolf radio controlled Nuclear Submarine Model - Excellent replica of the US Sea Wolf Nuclear Submarine makes it an Excellent gift for children's holiday and birthday Weights 2KG;Measures 13.7 x 3.5 inches(L x H);Material: ABS;Radio Controlled Submarine Power Source: 4 x AA Batteries(Not Included);Transmitter Power Source: 1 x 9V Battery(Not Included);Fit for 8 years old or higher Powered by three professional and powerful marine motors,provide more tremendous thrust Six channel full function transmitter provides forward/backward, emerge/diving and turn right/left steering Professional designed and manufactures larger torsion propellers of the radio controlled submarine which not only produce huge thrust, but also not so easy to be damaged;Professional watertight hull designed to protect the engine compartment For RC sub's balance control and ensures the sailing smoothness this Mini submarine comes with ballast weight