The HH6188K HH388K HH619Y are same for children's electric ride-on car that comes with a 2.4G remote control and a 12V receiver transmitter. This setup allows for wireless control of the car's movements.

The 2.4G remote control enables parents or guardians to operate the car remotely, providing them with the ability to steer, accelerate, and brake the vehicle from a distance. This feature allows for greater supervision and ensures the child's safety during playtime.

The 12V receiver transmitter is responsible for receiving the signals from the remote control and transmitting them to the car's motor and other components, allowing it to move forward, backward, and turn.

It's important to note that specific features and specifications may vary depending on the manufacturer and model of the HH6188K children's electric ride-on car. For accurate and detailed information about this particular product, I recommend referring to the product's official website or contacting the manufacturer directly. They will be able to provide you with specific details about the features, specifications, and any additional information you may need.