Iran unveiled its first national turbojet engine along with the home-made version of the sophisticated Russian S-300 missile defense system, dubbed as Bavar (Belief) 373, Fars News Agency (FNA) reported.

The two strategic products were unveiled in a ceremony in Tehran participated by Iranian President Hassan Rouhani.

The turbojet is an air-breathing jet engine, usually used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine has an air inlet, a compressor, a combustion chamber, and a turbine (that drives the compressor).

In April 2015, Iran displayed a model of its Bavar 373 missile defense system during the military parades south of the capital.

Iran designed and developed its own version of the S-300 missile shield after the Russians shrugged off delivery of their advanced missile defense system to Iran on the pretext of the UN Security Council sanctions.

The Iranian version has superior features over the original Russian model as it enjoys increased mobility, agility and reduced launch-preparation time, according to FNA.

Iranian Commanders had earlier said that Bavar 373 is similar to its original Russian model and traces and intercepts high-altitude targets.

After the removal of sanctions, Russia delivered half of S-300 air defense systems to Iran under the existing contract.

Head of Russia's Rostec corporation, Sergei Chemezov, said in July that Russia was planning to complete the deliveries of the S-300 air defense systems to Iran by the end of 2016.