Wireless Belt Pack Transmitter. It Operates in the 1.9 Ghz Frequency.<BR>The WB-LINK is a wireless beltpack transmitter with a 3.5 mm connector plug. It operates on the 1.9 GHz frequency. The WB-LINK is powered by two AA batteries and operates approximately 6 - 8 hours with fresh batteries. Use the beltpack with the AnchorLink series.<BR><BR>For a handsfree, wireless experience, the WB-LINK can be used with microphone elements such as the:<BR>HBM-LINK<BR>CM-LINK<BR>EM-LINK<BR>LM-LINK