Factual error: During the police pursuit in Pittsburgh, the officers are wearing shoulder speaker/microphone handsets. The models are the Motorola Saber radio, which wasn't introduced until 1989, while the season takes place in 1984.
Stranger Things (2016)
1 factual error in Chapter One: MADMAX - chronological order
Starring: Winona Ryder, David Harbour, Millie Bobby Brown, Finn Wolfhard, Dacre Montgomery
Chapter Two: The Weirdo on Maple Street - S1-E2
Factual error: When Chief Hopper and his fellow patrolman are standing over the lake, Hopper has a radio on his belt. The radio is a modern Motorola walkie talkie and at least a decade newer than it should be.
More trivia for Stranger Things
Chapter Four: The Body - S1-E4
Question: Where did the body of Will come from? And why was it stuffed full of cotton?
Answer: The body was fake, made by the scientists at Hawkins Lab in an attempt to cover up his disappearance and the existence of the Upside Down.