在线观看国产成人AV天堂野外_九九riAv国产在线观看_国产av福利无码无一区二区_日韩AV乱仑在线观看

?Excellent FM reception
?Built-in antenna with high reception sensitivity  
?Suppress noises to a safe 85dB
?Amplify weak sounds                                    
?Internal battery compartment,powered by two AA batteries 
?ANSI, NRR: 26dB