my favourite piece of technology are the headphones.
The headphones are an electroacoustic transducer, that means that this device transform electricity into sound to the user's ears. In general, there are two types of headphones, the big ones that cover the ear completly and the thiny ones, conformed by two individual pieces that the user insert in his auditive canal.
My first remember of me using headphones was when i have nine or ten years old. The sound was really awsome and I felt like the music was coming from the inside of my head. Since that moment I always  have one pair whit me.
I like this device because give to you the liberty to desconect from the world for a moment. I really appreciate my loneliness, so also like any device that make it more pleasant.