Pmr radio number of walkie talkies 2 purpose of use free time functions voice activation vox funtion scan function signal sensitivity 3 levels noise squelch automatic uhf frequency range 446 mhz channels 8 pmr call code 38 ctcss transmission power 05 watt power supply battery colours red black weight 80 g dimensions w x h x d 5 1 x 9 9 x 3 1 cm