1. Advanced Technology: New and upgraded wireless microphone headset system. This wireless headphone microphone utilizes advanced UHF low-power wireless transmission technology. 2. Superior Sound Quality: Built-in high-sensitivity microphone ensures signal stability, no delay, no radiation, anti-noise, anti-interference, constant frequency, and clearer sound quality. 3. Wide Compatibility: The wireless headphone microphone is compatible with voice amplifiers, high-power speakers, portable PA systems, mixers, and karaoke systems. 4. Long-Lasting: The built-in 400 mAh rechargeable lithium-ion battery provides approximately 6 hours of working time before needing a recharge. A USB cable is included for charging the transmitter and receiver. Full charging takes only 2.5 hours. 5. Compact Size and Suitable: Lightweight and convenient, with an elegant appearance and small size, making it easy to carry. Say goodbye to long cables. Perfect for teaching, fitness instructors, public speaking, coaches, stage performers, etc. 6. Uses Extra 6.5mm Connector: The receiver's connector is 3.5mm. For 6.35mm amplifiers, use the included additional 6.35mm adapters to connect more devices.