Description Open Half Face Motorcycle Bike Helmet Earpiece Headset Mic Microphonefor Motorola Talkabout Radio Walkie Talkie Security Door Supervisor 1pin 2 5mm Designed to work with moto bike racing helmet Noise cancelling with boom mic microphone Dual speakers with sticker can be pasted to inside of the helmet Specification Speaker Size 36mmCompatible type 2 5mm JackSensitivity 91 dB 3dB FrequencyImpedance 32 ohms 15 Audio input 100mWMicrophone Size 9 7 6 7mmResponse 20 16000 HzSensitivity 36 dB 2dBImpedance 2 2K ohms Compatible List T Series T270 T280 T289 T4000 T4800 T4500 T4700 T4800 T4900 T5000 T5022 T5030R T5100 T5146 T5200 T5300 T5320 T5400 T5410 T5412 T5420 T5422 T5428 T5432 T5500 T5512 T5522 T5530 T5532 T5500 T5550 T5600 T5620 T5700 T5710 T5720 T5725 T5800 T5820 T5822 T5900 T5920 T5950 T6000 T6100 T6200 T6210 T6212 T6220 T6222 T6250 T6300 T6310 T6312 T6320 T6322 T6400 T6412 T6500 T6510 T6530 T6550 T6512 T6552R T6500AA T6600 T6700 T6800 T6900 T7000 T7100R T7150R T7200 T7300 T7400R T7400AA T7450R T7100 T7150 T7200 T7400 T7450 T7500 T7600 T7700 T7800 T8000 T8500 T8550 T9000 T9500 T9500R T9500XLR T9550 T9550XLR T9580XLR T9650 T9680TKLR Series TKLR T3 TKLR T4 TLKR T5 TLKR T6 TLKR T7 TLKR T8EM Series EM1000 EM1000R EM1020R EM1010TPRMR Series MR350R MR355R MR356RMH Series MH230RMB Series MB140RMC Series MC220R MC225R MH230R MD200TPRMJ Se