Convenient to Use: This wireless microphone is built with metal spray paint and ABS plastic construction, making it both lightweight and durable. With its rechargeable battery, it can offer up to 5-6 hours of uninterrupted use with just a 2-3 hour charge. The karaoke microphone display keeps you updated with the battery level and signal strength in real-time, ensuring that you are never caught off guard. Stable Signal: Our system is designed for effortless operation - simply turn it on, and the receiver will automatically synchronize with the transmitter's frequency. With 15 adjustable channels, you can eliminate radio interference and use up to 15 sets simultaneously. Enjoy the convenience of hassle-free frequency synchronization and high-quality audio transmission during your various events or performances. Easy to Operate: Simply plug the receiver into your sound source, insert 2 AA batteries (AA Batteries NOT INCLUDED) into each microphone, turn on both the receiver and microphones, and they will automatically synchronize. Wireless Freedom Range: With a 200ft (line of sight) operating range, our receiver allows you to move freely during performances with the cordless microphone, making it perfect for indoor and outdoor events like family karaoke, church gatherings, weddings, meetings, or lectures. Enjoy unrestricted performance and presentation with this system. Excellent Sound Reproduction: This wireless mic delivers exceptional sound with minimal noise and distortion, thanks to its cardioid pickup pattern that isolates the main sound source and reduces background noise. Its dynamic design is further enhanced by the cardioid pickup pattern, resulting in clearer and more accurate recordings.