wireless headset microphone

[Nick Gawronski]

Hi, Does anyone know if they make a wireless remote microphone that is a 
headset like instead of wireless headphones it is a headset microphone 
that can go a pritty long way away from the transmitter and has good 
battery life?  By long way I mean like from one room to another room and 
still be able to transmit to the receiver.  Headphone support is not 
required but would not hurt.  Nick Gawronski