Check the listing for details. 8 Channel Pro UHF Audio Wireless Microphone System 4 Handheld 4 Headset Lavalier. Condition: New. Listed at 299.00 USD. Audio Wireless microphone 8 Channel 4 Cordless Handheld 4 Lavalier Mic UHF Wireless Microphone System(our company maintenance department is in Brooklyn &Los Angeles）（our company offer 3 year free warranty)..(This Microphone system comply with new FCC frequency rules) Features:8 Channel Receiver with 4 Cordless Handheld & 4 Lavalier MicrophoneIndividual Volume Control on each ChannelOne 1/4" Mixed and four 1/4" Individual OutputsPerfect operation status indicaterFour Telescoping Receiver AntennasBroad frequency response range, super low distortionFull metal designUse 2*1.5V battery Specifications: Overall SystemNumber of Channels:8 channelsCarrier frequency range:500MHz-600MHzStability:±0.006%Normal deviation:±22kHzS/N ratio: