Feature: 1. Motor water cooling system, brushless water cooling motor, prolong engine life. 2. An internal hull strap on the left and right side of the rudder is introduced to automatically correct navigation channel deviations. 3. Racing handle speed with brushless motor, smooth speed regulation, strong acceleration. 4. 2.4GHz transmission technology, with a super long distance of 150 meters, support for multiple simultaneous competition. 5. With full‑size forward, backward, left/right rudder, special anti‑dumping function, low battery alarm, top speed 50KM/H, motor water cooling system, built‑in navigation rudder, turning radius of 2.5 meters and other functions. Specification: Item Type: RC Remote Control Ship Weight: Approx.2.3kg/5.1lb Shell Material: Plastic Color: White and Black Suitable Age: 14+ Overall Material: Plastic + Copper + Stainless Steel Body Battery: 11.1V, 2500mAh Lithium Battery, with Overcharge and Discharge Protection (matching) Charging Time: 180 Minutes Use Time: 5-7 Minutes Controller Battery: 4 x 1.5AA (not Included) Number of Drive Motors: 1 x 3554A Brushless Charging Voltage: US 110-240V Remote Control Distance: 120-150m/393.7-492.1ft Remote Control Frequency: 2.4G Function: "Full-size Forward, Backward, Left/Right Rudder, Special Anti-dumping Function, Low Battery Alarm, Top Speed 50km/h, Motor Water Cooling System, Built-in Navigation Rudder, Turning Radius of 2.5 Meters.. Package List: 1 x Remote Control Boat1 x Remote Control1 x Matching Battery1 x Charger1 x Voltage Stabilizer1 x Allen Driver4 x Hex Wrench1 x Spare Propeller4 x Accessories2 x Manual Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.