Key Specifications/Special Features: Arrow comes standard with a 2.4GHz marine radio system providing extended range and interference-free operation Specifications: 2.4GHz brushless motor high speed RC boat Product size: 63 x 17 x 11cm Color size: 68.5 x 24 x 17.5cm Carton size: 71*36*41cm Total weight (without packing): 1.22kg Quantity: 4 pieces/carton Run time: about 5-7 minutes Charging time: 180 minutes Remote distance: 120-150 meters Drone battery: 11.1V, 2200mAh Lithium battery with over-charge and discharge protection Controller battery: 4*1.5AA (not included) Function features: full-scale forward/backward, left/right rudder, special anti-tilt function, low battery alarm, speed up to 50kph, motor water cooling system, built-in navigation rudder, turning radius 2.5m Packing contents: 1 x 2.4G transmitter 1 x tail propeller 1 x Lithium battery for boat HXT 3.5mm plug. 1 x wall charger voltage: 5V Rated power: 2.1W 1 x balance charger 1 x screwdriver 2 x bracket (UDI-005)