หูฟังเริ่มมีใช้กันเป็นทางการเมื่อสม

Earphones are used as when the era of 1880, but then not have headphones to listen to music, but it's designed to use only the top that is used with a super phone, Renault 7. Then there is only one side of the headphones, because it was designed primarily for use with the phone.

Headphones are used officially began in 1880, but in those days when the headset is not responsible for the music. I came out to specific applications, it is used with a mobile operator Renault itself. In that era there are only one side of headphones designed for use with phone service.

Headphones used officially began when 1880 but in that era. Headphones don't have to listening to music. But left to use specific aspects, that is, use with Renault. Computer telephone.