Check the listing for details. Professional 2 Channel UHF Wireless Dual Microphone Cordless Handheld Mic System. Condition: New. Listed at 43.99 USD. Professional 2 Channel UHF Wireless Dual Microphone Cordless Handheld Mic System Features Less noise and large dynamic range. Equipped with great function to effectively reducing howling. Unique noise squelch function, reject external interference and turn on the local sound system. The selection of excellent chips and high-quality components makes the sound quality of this machine extremely excellent. A comprehensive solution to the use of KTV out of frequency, mixed frequency, sound-off, not enough distance, sound not into the microphone, singing is not smooth, battery is not durable, etc. problems Professional wireless system with 2 microphones. Ideal for professional use at any events: Karaoke, sound source recording and amplifying, vocal concerts, live-performances, conference, musical and opera, church, school, hall, family, party, etc. Specifications Material: Metal, ABS Receiver: Receiver Size: 8.25" x 7.25" x 1.75" Receiving sensitivity: 80DB De-emphasis: 50us Power supply: AC110-220V 45 / 60HZ Power consumption: 4W Microphone: Transmitter power: 30mv Modulation method: FM, F3F Stray radiation suppression:> 40DB Maximum modulation: ± 75KHZ Power supply: 1.5V Battery power consumption: 40DB Maximum modulation: ± 75KHZ Power supply: 1.5V Battery power consumption: 40DB Maximum modulation: ± 75KHZ Power supply: 1.5V Battery power consumption: