Features:

1, wirelss 2.4G audio tecnology , no signal interference at all.
2,built-in rechargeble lithium lon betteries , no need extra batteries.
3,included rechargeble usb cable enable you to recharge the mocrophone when you are singing , you can recharge your microphone everywhere.
4,effective transmitter distance:25 meters (in empty space)
5,fully compatible with all the available game platforms .