I suggest Aussies avoid Uniden brand radio units with headsets. The radios are fine, but the Chinese headsets seemed a cheap flimsy afterthought. One was defective, Uniden (usually a responsive company, I have their portable back up VHF which is good), refused to respond despite a number of calls to them. I had mailed them the defective headset at their request, their rep told me they had other headset complaints. Maybe they tired of replacing headsets or ran out of replacements. Not worth buying for the headsets.