MyBDJ RC Toys Mini Submarine Toy 4CH High Powered Speed Remote Control Boats 2.4G Plastic Tourist Submarine Model Outdoor Toys Dual tail popellers:provides a hight speed. Educational toy:it can not only exercise the children's hand-eye coordination,but also hand-foot agility. 2 in 1Transmitter:its transmitter can be used to control 3314,it can be used to charge the boat. State of Assembly: Ready-to-Go Remote control:radio control