... QuanSheng TG-91A walkie talkie 2.ISO90001, CE approved 3.99 channels, super performance 4.For hotel, security, ... Low power alarm16 Busy channel lock2.Specification Frequency range VHF: 136-174MHz UHF: 400-420MHz UHF: 450-470MHz Rated voltage ... distortion ≥60dBAdjacent channel Selectivity ≥65dBBlocking≥85dBSpurious rejection≥65dB 3. Photo gallery and Cerfitications:If you need more informations ...