可配水晶头qd线、3.5mm 双插孔pc线、d线；可选在线控音盒，的静音效果；330°可调整的吊臂确保通话效果, ultra flextm mic导线, 提高吊臂旋转寿命次数；铁氟龙吊臂旋转支垫, 定位准确, 高耐磨， 确保使用寿命；耳机头卡可自由伸缩调整，更适合您的佩戴；提供的听力保护，时刻呵护您的健康；快联接头功能,可让您在仍然戴着耳机的同时离开电话，让您腾出双手，感受自由沟通，使通话更加轻松、高效；可选双耳配置。· easily match crystal plug ,3.5mm double plug pc cables andd cables;· optional for on-line volumeswitch, excellent effects for mute;· 330°adjustable holder with bestsound, ultra flextm mic wire adopted for increase the usefullife of the holder oftenadjusted;· teflon pad for adjusting theholder, position fixed exactly, wearproof and assuring the usefullife;· adjustable head band, comfortablefor having on the headset;· hearing protection meeting to theinternational standard, caring for your health constantly;·uick disconnection plug,easily for you being away from the telephone while stillhavingon the headset. liberating yourhands and providing free communication with high efficiency;· dual model optional