Retevis DSP Noise Reduction Two Way Radio Headset with Mic,Acoustic Tube,for RT22 RT68 RT21 H-777 RT27 RT86 RB26 RB89, Compatible with Kenwood SAMCOM 2 Way Radios,Earpiece for Walkie Talkies(1 Pack)

K head 2 pin; multi-brand compatibility; compatible with Retevis RT21/RT22//H777/H777H/RT68/RT68H/RT19/RT22S/H777S/H777D/RT27/RT21H/MateTalk B4/RT86S/RB58/RB26H/C6B walkie talkies; compatible with Pxton Baofeng BF-888S BF-T26 Kenwood MaxTalker MT-8S radios walkie talkies ^^ DSP chipsets; the chipsets of earpiece will analyse and filter the sound collected by the two microphones all the time; processing the environmental noise and providing you with clean communication ^^ Dual-microphone design; the top one picks up the speaking voice; the bottom one picks up the ambient noise ^^ Independent noise reduction switch; the noise reduction effect is specially set with a switch; it can be temporarily turned off manually if we use it in a quiet environment ^^ 20 hours long working time; a fully charged headset can work continuously for 20 hours; the headset has a built-in 320mAh battery; which can be fully charged in 3 hours through USB charging