... ,volume-wire device, transparent and clear sound,unilateral line design Headphone:1. Lightweight headband design;2, A hard straight feature style microphone ... , Unilateral line design can avoid the line winding;6, Using lightweight, high-rigid material to create it.Mic DimensionsØ6.0X5 ... .P.L)-90dB±3dBCord Length ≥2.3metersNet Weight ≥120g V31 Headphone