functions
stereo headphones with microphone
plug: 3.5mm, such as mp3/4 player, smartphone, tablet, ipod, ipad, iphone, blackberry, etc.
sensitive microphone
on/off button for receiving/ending incoming calls (function depends on phone capabilities)
cable length: 1.2m
resistance: 18 ohms +/- 10%
frequency response 20hz - 20khz
microphone sensitivity: -40db +/- 3db
headphone sensitivity: 110db+/-3db
weight: 14 years