Retevis AI Active Noise Cancelling Two Way Radio Earpiece, Rechargeable, for RT22 RT21 H-777 RT68, Compatible with Pxton Baofeng BF-888S Kenwood Walkie Talkie, Walkie Talkie Earpiece with Mic(4 Pack)

If the indicator light is red, the AI active noise cancelling effect can be used normally; if the indicator light is blue, it means the battery is low and needs to be charged; if the indicator light is off, it means the battery is depleted, and the AI active noise cancelling effect will not work. Please charge it through the Type-C port to continue using the noise cancellation effect; if the indicator light is green, it means the battery is fully charged. ^^ AI active noise cancelling acoustic tube earpiece; equipped with an AI noise reduction chip; reduce the background noise; no matter how noisy the workplace is; achieve clear communication ^^ Durable to use; kevlar reinforced cable surveillance headset; provides tensile strength; resistant to stretching and breaking; ensuring longevity and reliability ^^ Rechargeable 2 way radio earpiece; includes a built-in 300mAh battery and type-C port; after fully charged once; you can use the surveillance earpiece for about a week continuously; meeting standard shift needs ^^ 2-wire design; has strong stability; fixes the mic/ptt and radio earpiece on the collar or lapel; makes use more convenient ^^ Wide compatibility; K head 2 pin security earpiece; compatible with Retevis RT22 RT21 RT68 RT68H H777H RT27 RT86 RT86A RT86S walkie talkies; compatible with Pxton Baofeng BF-888S BF-T26 Kenwood