joyin 4 pack friction powered city hero play set including fire engine truck, ambulance, police car and helicopter emergency vehicles with light and sound joyin joyin has become one of the fastest-growing manufacturers and distributors of party supplies and seasonal products. from toys, to party decorations, to seasonal goodies, our products provide entertainment, education, and creative expression with an emphasis on hands-on play. <p>includes 1 ambulance, 1 fire engine truck, 1 rescue helicopter and 1 police car endless fun. a good variety of 4 daily use city heroes. all of them have light and sound. <p>friction powered. vehicles will roll on their own with pushing for a long distance on smooth surfaces. full of details like the real vehicles. <p>fire engine has flexible water pump, which can be rotated. the rear antenna of police car can swing, pretending to show the sign for catching outlaw. <p>ambulance has an opened door to pretend to send the wounded. rescue helicopter has a rotatable propeller. hoist cable of the helicopter can lift up the stretcher, pretending to transport the wounded. <p>customer satisfaction. providing a 100% satisfaction experience is our main priority to our customers. feel free to message us through “contact sellers” if products don't meet your expectations. the celebrations start at joyin!