[Voice Amplifier with Wireless Lavalier Microphone]: The wireless voice amplifier comes with a wireless lavalier microphone. The upgraded wireless design helps eliminate messy wires and discomfort associated with traditional wired microphone headsets. Simply clip the microphone onto your shirt for convenience during teaching, training, presentations, public speaking, and other activities. [Surprisingly Loud Volume]: The wireless lavalier microphone amplifier system is compact and portable. The amplifier features a built-in speaker with a noise-canceling chip and stable signal transmission, delivering louder, clearer, and more balanced sound. This wireless microphone with speaker is ideal for classroom teaching, public speaking, interviews, and more. [Long Battery Life]: The wireless speaker system has a built-in 2600 mAh rechargeable battery that provides up to 6 hours of usage and fully charges within 3 hours. The portable lapel microphone offers up to 6 hours of working time and requires only 1.5 hours for a full charge. [Easy to Operate]: The wireless microphone automatically connects to the amplifier when powered on, with a stable transmission distance of up to 65 feet (20 meters). Enjoy a seamless and relaxed teaching experience with this wireless voice amplifier. How to connect the microphone and the speaker: Remove the microphone from the back of the speaker. Press and hold the button on the side of the microphone for 2-3 seconds, then turn on the speaker. The microphone will connect automatically. When connected successfully, the microphone indicator light turns solid green, and the "Connect" indicator on the speaker display remains lit. How to improve sound quality: 1. Position the microphone within 6 inches of your mouth for clearer, smoother audio. Excessive distance, such as when turning or tilting your head, may cause audio interruption or reduced performance. 2. Small adjustments to microphone placement and speaker distance can significantly impact sound quality. Test configurations in advance for optimal results. 3. Ensure the front of the microphone faces your mouth directly to capture voice clearly and accurately while minimizing background noise. 4. Avoid pointing the speaker toward the microphone to prevent feedback. The system may reduce certain frequencies to suppress noise, which can result in muffled or distorted sound. 5. For best performance, do not place the speaker and wireless lapel microphone too close together to avoid potential audio delay. 6. To prevent feedback, always keep the speaker at least 20 inches away from the microphone. Color: Black Material: Plastic Package Contents: 1 x Wireless Speaker 2 x Lavalier Microphone 1 x Belt Note: Light reflection and differences in display settings may cause slight variations between the product color shown in images and the actual item. Measurement error allowance is +/- 1-3 cm.