 If the toy is pointed upwards the sound would be altered by a ball bearing switch to imply a doppler effect acceleration or taking-off, while a nose down orientation gives the sound of decelerating engines.A button at the rear of the cockpit activates the LEDs at the front of the toy, along with a blast noise, to simulate the firing of its lasers.The button was designed to be pressed by the thumb while the ship was held by the main body or engine piece (in "dragster" configuration).