They are good and heavy in the hand, so that you get the feeling to hold a high-quality, professional product in his hands. The two necessary batteries (size: Mignon AA) last a long time (which of course also on the quality of the respective batteries is).
The mics facilitate a the game a lot because you can start without the hassle Kabelanschließen faster with the singing and also does not fall on the stupid cable. So absolute freedom in singing and dancing to SingStar parties.
Just buy it for all users of SingStar on PS3, the price of the 30 EU is more than adequate !!!