Great for all kinds of indoor outdoor activity, such as party, church, speech, weeding, family get-together, etc; FCC certification and comply with new FCC rules. Professional UHF microphone system delivers great audio signal and is much more stable than the VHF; Work great with all PRORECK speakers; Six XLR outputs & one 1/4(6.35mm) mix output to connect this versatile system to most amplifiers/mixers/powered speaker on market. Operating range: 200 feet within line of sight; Separate volume controls & Large LCD display; AF and RF signal indicator; 8 kinds of EQ modes(JAZZ POP COUNTRY ROCK, etc) for different venues or shows ; Enhanced antennas ensure stable and effective audio reception. Six undirectional cardioid microphones deliver clear and loud sound; Made of metal and energy-saving; Each microphone needs 2xAA batteries(not included); Fixed frequency: 600.5-607.5-615.5-653.1-658.3-662.8MHz; Note: 2 sets can not be used together.