I have a couple and use them on occasion, but of the Chinese knockoffs, I prefer the Uv5R. Having said that I just took a look at both and mine on High are holding at 3.25 watts. Low power is .98 watt. There is another one that I saw on fleabay that purports to have 8 watts transmit power. I am down in Argentina at the moment, but when I come home for summer vacation I want to try the Radio Tone Duplex to see if it will pass the GMRS freqs. I have one and it works great setting up a temp 2 meter VHF or 440 UHF repeater for amateur radio use. The Li-Ion batter in it gives you about 24 hours sometimes longer use without power which makes it great for emergencies, however don't know if it will work on GMRS freqs....