Telephone handset for iPhone4/4s/5/iPad/ipad2/3/4touch

This handset is not suitable for all 3.5mm headphone jack phone because too many brands and models of mobile phones， various models of mobile phones on the loudspeaker and microphone parameters required varies. Same caliber 3.5mm phone headset， the internal sequence is divided into two lines， like Nokia and Apple iphone headphones though， like all 3.5mm headphone plug， but because of the different internal line sequence and can not be mixed