anyone know anything about these???

I dont know much....
thanks

Been using them for years and love it. Just make sure if you buy one that it is in the legal frequencies. Some are not some are. Mine are in the 500 Mhz (A band) and are legal.

G2/3.Great budget priced system.
Check the Sennheiser frequency selection webpage for your location and choose a frequency block accordingly for best results.
Beware of the Chinese counterfeits on eBay.

It's the cheapest usable wireless out there. Spring for the extra 100.00 and get the current G3 model though. It's even better.
600.00 total. Anything cheaper will be more trouble than it's worth.