pretty much does what it says on the tin (or plastic in this case), however i think the Icom radios are superior in terms of value for money/quality (they also have a 3 year warranty).
I agree with Wally, I have now got Raymarine, used to have Icom.
The Icom was much better, easier to use as well.
Might read the Raymarine manual to understand it more, but I see this a failure on Raymarines part, the Icom was totally intuitive.