In August 2007 at Washington D.C., a full-scale model was exhibited at the Association for Unmanned Vehicle Systems International (AUVSI) symposium, an aeronautics exposition with over 275 exhibitors.

[2] In 2008, Hydra Technologies received the Leonardo da Vinci award, given by the International Aeronautics Congress of Mexico (CIAM for its Spanish abbreviation) for the development of the S4 Ehácatl, as well as the E1 Gavilán.

Its principal market is directed towards providing security and surveillance capabilities in support of the Armed Forces, as well as civilian protection in hazardous situations.

[2][4] Apart from a U.S.-made FLIR infrared thermal sensor system, all of the S4 Ehécatl's componentry and avionics are designed, developed and manufactured in Mexico by the firm Hydra Technologies.

[2][3][5] The S4 Ehécatl has an electronic system that is designed to provide up to eight hours of autonomous flight, in either daytime or nighttime conditions.