Abstract: An extended vision control device or accessory for selective attachable-detachable use with visual aid instruments such as binoculars, or monocular optical telescopes and the like, to enhance both visual tracking and radio control movement of mobile vehicles, such as model or miniature target tanks, trucks and the like. This accessory control device includes at least one housing for finger-operable controls, each housing adaptable for removable mounting upon a visual aid sighting instrument by means of quick attachable-detachable fasteners, and each housing further includes a control lever and an electrical conductor cable connectable with various of commercially available radio wave transmitter units having one or more sets of selector control devices, to thereby enhance movement observation and continuing radio-controlled operation of the device with which it is associated.