A system combining the features, elements, and operations of a cellular telephone and a radar detector into a unitary assembly. The present invention generally comprises a housing enclosing a power supply, an output speaker, an input microphone, an antenna, a display screen, a multi-button keypad, cell phone circuitry, and radar detection circuitry. The housing further incorporates a spring-loaded clip assembly that provides for “hands-free” cellular telephone operation. The present invention may include a plurality of operational modes that are manually selected by a user via the keypad. The operational modes may include “cellular telephone only”, “radar detector only”, and a hybrid mode wherein the system operates as a radar detector until an incoming cellular telephone signal is detected causing the system to convert to its cellular telephone operational mode. The present invention is easily transported and simple to use, fabricated of materials providing the appropriate degree of durability / longevity required by the nature of its use, and may be economically manufactured and sold.