Function:WALKIE TALKIE ,TRANSCEIVER ,TWO WAY RADIO,OUTFIT MATERIAL,BATTERY,CHARGER ,ANTENNA,EARPHONE,ETC, Detailed Product ... Low-power alarm8) Channel scan9) Voice prompt(Chinese and English) 10) Time-Out-Time(TOT) 11) High/medium/low powerswitch12) Wide ... Selectivity ≥65dB ≥60dBSpurious Rejection≥65dBBlocking≥85dBAudio Power0.3WAudio Distortion<10% two way radio,walkie talkie,transceiver CY-810