HOW DO THEY MAKE IT: Headphones

In the early 20^th century, headphones were used mainly by telephone operators and radio technicians. But in the 1930s, headphones were redesigned to be marketed to the public. So music lovers everywhere plugged in!

Since then, headphone have evolved with the growing technology, and have become one of the most popular and important smartphone accessory. The video of the day elucidates how headphones are made. Watch and learn:

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