Long battery life: This headset microphone system can work continuously for about 6 hours after being fully charged for 2 hours. The charging time is about 2 hours. It is suitable for long-term use. Premium Sound: It has a built-in high-sensitivity microphone, signal stability, no delay, no radiation, anti-howling, anti-interference, constant frequency, and clearer sound quality. Widely used: This wireless headset microphone system is suitable for teachers, tour guides, DJs, weddings, parties, classrooms, speeches, etc. It is very suitable for use in places such as classrooms, meetings, and performances. Easy to Use: Turn on the receiver and transmitter power switches, and then you can use them.Short press the "+" and "-" button to adjust the volume. It is equipped with a new digital display screen, The volume and battery status are clearly presented on the screen. Use Multiple Wireless Microphones At the Same Time: You can use multiple wireless microphones at the same time (Max. 40 channels). Wide Compatibility: Compatible with voice amplifier/high power speaker/portable PA system/mixer/ and karaoke microphone speaker systems. Note: Does not support mobile phones, Bluetooth speakers, PC, or laptop use If you have any questions about our products, please contact us in time, and we will provide you with satisfactory solutions.