2 way radio Model: PT-320 Frequency range: VHF:136-174MHz,UHF:400-470MHz. Channel number:99 Woring voltage:7.2V DC Step-in frequency:5KHz/10KHz/12.5KHz/25KHz Temperature Range: -20.c+60.c Frequency stability:+-5ppm Dimension:115*45*30mm We have our own brand and factory so that we have Competitive price.