[3] The system was formally unveiled during a ceremony attended by the Iranian President Hassan Rouhani on 22 August 2019,[1][4][5] and was declared operational the same day.

He continued that in the area of detection and radars, a very good point was reached and defense ministry was working on two or three missiles each for a different range and altitude.

He said that the design was complete, all the parts were going to be manufactured inside the country and it had a good ability to detect and intercept enemy aircraft.

According to Janes international: "Bavar-373 displayed on 21 August is clearly a unique Iranian system that appears to reflect extensive investment in its ability to develop phased array radars".

[19] In April 2022, reports surfaced which claimed that Iran had transferred a Bavar-373 system to Russia for use in the Russian invasion of Ukraine.

No formal information was given about this missile but it appears from news photos that Sayyad-4 is similar to Sayyad-3 in wings and control surfaces, however it varies lightly in frontal shape.

[23][24] Bavar-373 uses a phased array radar for tracking aerodynamic targets and ballistic missiles in medium to long ranges, mounted on the ZAFAR heavy truck.