The UV-82 Series come with a dual push-to-talk button. The dual PTT is a huge leap forward in the HT technology. It allows you to transmit on two frequencies by the use of the rocker PTT switch. By pressing up you can transmit on "Frequency A" and by pushing down you can transmit on "Frequency B". Frequency A or B can also be used as a scanner of channels, frequencies, CTCSS and DTS tones.