Did you know that the concept of wireless headphones dates back to the 19th century? In 1891, a French engineer named Ernest Mercadier received a patent for a device that could transmit sound without wires. His invention, called the "Radiophone," used electromagnetic waves to transmit sound from a transmitter to a receiver.

Although Mercadier's invention was not practical for everyday use due to its large size and limited range, it laid the foundation for the development of wireless audio technology that we enjoy today, including wireless earphones.