Superior Sound Quality The integrated dynamic unidirectional capsule guarantees exceptional sound reproduction with crystal-clear clarity, richness, and depth. It effectively eliminates unwanted background noise and interference, ensuring a pure and immersive audio experience. 4 Antennas with 295ft Transmission Range Our karaoke microphone features an unique 4 antenna design, greatly improving anti-interference capability and minimizing channel interference. Experience an upgraded transmission range of up to 295ft 90m, ensuring stable signal transmission for reliable performance. 10 Frequency Options per Mic In a total of 4x10 channels, allowing up to 40 systems to be used at the same time. The multichannel function enables users to effortlessly switch to different frequencies if any preset frequency encounters issues, ensuring reliable performance. Easy Setup Automatically pair transmitters for convenient plug-and-play. Use the included 1 4 34 6.35mm cable or XLR cable not included to connect to mixers, speakers, power amplifier and more. Each wireless mic requires 2 x AA batteries not included . 4-cordless-microphone system is ideal for karaoke nights, family gatherings, DJs, and weddings. Sturdy Built Rugged microphones for singing are fully metal built, ensuring resistance to impact and corrosion. Experience a sturdy and comfortable grip for optimal performance.