Simple and quick operation, plug and play, auto-match after the receiver is plugged in, and easy connection. Integrated 70mAh eco-friendly lithium battery with a 10-hour runtime between charges. It has a 450mAh battery charging case and can charge the microphone five times. It supports one hour of use after five minutes of fast charging. Long-distance, barrier-free transmission up to 80 meters is possible with 2.4G wireless transmission technology. Clear pickup, 360-degree omnidirectional microphone, intelligent noise reduction. satisfy different models' usage requirements while being completely compatible with iOS and Android devices. The receiver is small and light, has its own charging port, and can be used for interviews, online courses, live broadcasts, and other social situations. 2.4GHz is the frequency range. Range of frequency response: 20 Hz–20 kHz. Time of transmission delay: