Anybody know how this is possible?

http://www.amazon.com/Sony-PS3-FrontMan-Wireless-Guitar/dp/B0013016O0/ref=pd_bbs_sr_3?ie=UTF8%26s=videogames%26qid=1203479426%26sr=8-3This 3rd party guitar claims to work with both Rock Band and Guitar Hero. Anybody know if it's true. Edit - Sorry I posted this in the wrong forum.