Vocalism Principle:Balanced Armature
Function:For Mobile Phone,HiFi Headphone,For iPod,Sport,Common Headphone
Frequency Response Range:20-24000Hz
Support Memory Card:No
Note: There are two versions of this headset, one is binaural and the other is single ear. The prices of the two versions are inconsistent. In order to avoid unnecessary late disputes, please carefully select before placing the order.