Baofeng Black Handsfree Dual Frequency Transmitting Mic Speaker for Baofeng UV-5X Mate Two-way radio Walkie Talkie Transceiver Dual display, dual standby, and dual tranmitting alternatively via special PTT button Dual band two-way radio supports UHF(400-520MHZ) and VHF(136-174MHZ) Quick frequency and channel programming through mini keypad or PC programming via cable and software Basic but useful functions as CTCSS/DCS, VOX, TOT, DTMFST, frequency channel scanning,W/N band selection,etc This MIC speaker is specially designed for baofeng new arrival UV-5Xmate dual standby/display/transmitting two-way radio. And the PTT button on it has two heads, whose style is the same as PTT of UV-5Xmate for quick and convenient transmitting between two frequencies, switchining and adjusting primary working frequency flexibily.