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R/C DINOSAUR BUMP STUNT CAR （40 FREQUENCY+27 FREQUENCY, FUNCTION: A TWO IN ONE COMBINATION OF STUNT ROLLING AND BUMPER CAR DUAL FUNCTIONS, WHICH CAN PLAY STUNT ROLLING ALONE OR CHASE AND DETERMINE THE WINNER WITH TWO BUMPER CARS. SOUND AND LIGHT MATCHING, REMOTE CONTROL OPERATION. COMES WITH A 3.7V LITHIUM BATTERY, 500MAH, REMOTE CONTROL 2 * AA NOT INCLUDED; REMOTE CONTROL DISTANCE OF ABOUT 10M; CHARGING TIME 1-2 HOURS, USAGE TIME NOT LESS THAN 25 MINUTES）