W Audio DM 800H wireless UHF twin handheld radio microphones feature 90 selectable frequencies. Transmission is on Channel 70 (863-865Mhz). Equipped with intelligent mute software, the receiver will silently mute the audio output should the transmitter be switched off or out of range. Outstanding vocal reproduction and stable wireless connectivity allow freedom of movement on stage. These systems offer crystal clear sound reproduction and rock solid reliability. Metal bodied, rechargeable transmitters feature ergonomic design with a rugged housing to stand up to the rigors of the road. Supplied with a foam lined carry case for protection during transit.