Check the listing for details. Pro Audio UHF Wireless Microphone System 4 Channel 4 Handheld Metal Dynamic Mic. Condition: New. Listed at 159.00 USD. Audio Wireless microphone (4 Handheld meta Mic wireless microphone system)(We have a warehouse and maintenance department in KY, and the products are sent out in KY warehouse and delivered in 5-8 working days）（our company offer 3 year free warranty)(This Microphone system comply with new FCC frequency rules) Our store has 2 sets difference frequency with system Frequency range (520MHz-580Mhz) Attention: The microphone cannot be sent to Puerto Rico Features:4 Channel Receiver with 4 handheld metal MicrophonesIndividual 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:4 channelsCarrier frequency range:520MHz-580MHzStability:±0.006%Normal deviation:±22kHzS/N ratio: