PURPOSE: An observation device including a wireless communication function is provided to compute a location of a target and directly transmit detected intelligence to a control device through a wireless communication module. CONSTITUTION: A GPS(Global Positioning System) module(121) is installed in a telescope body. A coordinate and distance measuring sensor(123) is installed in the telescope body. A near field wireless communication module(125) is installed in the telescope body. The near field wireless communication module transmits information about an intelligence target observed through the coordinate and distance measuring sensor. [Reference numerals] (121) GPS module; (123) Coordinate and distance measuring sensor; (125,193) Near field wireless communication module