High-quality wireless transmission: Enjoy a stable and clear audio experience with a transmission distance of 30-50 meters, perfect for amplifying your voice in large rooms or outdoor settings without the hassle of cables. Long-lasting battery performance: Equipped with a built-in 250mAh lithium battery, this microphone allows for up to 8 hours of continuous use, ensuring reliable performance for extended teaching sessions or presentations. Versatile and user-friendly design: This set includes a dynamic lavalier microphone and a receiver, both designed for ease of use in various settings such as classrooms, tours, or any public speaking event. Superior sound quality: Features a cardioid polar pattern and a frequency response of 40-16KHZ, which focuses on capturing sound from the front, minimizing unwanted background noise and enhancing the clarity of your voice. Color: Black Material: plastic Package Contents: 1*set Wireless Lavalier Microphone