The working principle is different. The earphone is a return-type monitor earphone, and the earphone is a pair of conversion units.
Earphones receive electrical signals from media players or receivers, and use speakers close to the ears to convert them into audible sound waves.
The function is different. The function of the ear return is to clearly listen to the accompaniment and one’s own voice during a noisy party or event performance to identify whether there is any sound loss.
The main function of earphones is to listen to music or answer calls.