earphone
n (usu pl 通常作复数)
(a) either of two receivers attached to each other so that they fit over the ears, used for listening to records, the radio, etc 耳机.
(b) similar device with only one receiver that fits inside one ear 单耳机.
I'm afraid I can't agree with you. That's a good way of giving information, but it's not a good way of persuading people. For one thing, it's boring, and people aren't going to read an ad that looks boring. For another thing, one computer looks very like