Right now you are watching the movie 300 full online free , produced in United States belongs in Category Action, Adventure, War with duration 117 min , Directed by Zack Snyder and broadcast at 123Movies , Based on Frank Miller’s graphic novel, “300” is very loosely based the 480 B.C. Battle of Thermopylae, where the King of Sparta led his army against the advancing Persians; the battle is said to have inspired all of Greece to band together against the Persians, and helped usher in the world’s first democracy.