Babrit F1 High Speed RC Boat Remote Control Electric Boat-Red (Only Works In Water) Double powerful 280 motors,driving speed upto 15-20 KM/H Strong signal transmitter(Random frequency: 27MHZ,40MHZ,49MHZ) distance from 30 to 50 meters.(Frequency can not be changed) Move forward/Backside,turn left and right Precise port position and self balancing stable sailing. 4.8V 700 mah reachargeable battery,Remote control battery not included.(Notice: Do not leave the battery charge overnight.Safety charge time is 3 hours.Please plug off immediately when you finished charging.)