These UHF Wireless Microphone Systems offer users the freedom to move around while speaking. System choices consist of a 800-channel PLL-synthesized UHF Receiver with either a handheld microphone or lavaliere microphone and body-pack transmitter. Headset microphone also available. Also known as -Bogen UDMS800HH - UHF Wireless Handheld Microphone System - 470 MHz to 490 MHz S-UDMS800HH - UHF Wireless Handheld Microphone System-Bogen UDMS800HH