[Voice Amplifier with Wireless Lavalier Microphone]: The wireless voice amplifier come with wireless lavalier microphone. Upgrade wireless microphone design helps you messy wire and the feeling of and discomfort from tradition wired microphone headset. You can just clip the microphone on your shirt to convenient for your teaching, training, presention, public speaking and other activies. [Surprisingly Loud Volume]: The wireless lavalier microphone amplifier system is , compact and portable. The amplifier has a built-in speaker with a noise-canceling chip and a stable signal, which makes the sound louder, clearer, and more balanced. The wireless microphone with speaker is perfect for classroom teaching, public speaking, interviews and more. [Long Battery Life]: The wireless bluetooth speaker system built-in 2600 mAh rechargeable battery that can used for up to 6 hours, It to be fully within 3 hours. The portable lapel microphone working time is up to 6 hours. Only needs 1.5 hours to fully charge it. [Easy to Operate]: The wireless mic auto connect with amplifier when power on, stable transmission distance up to 65 Feet (20m). You can immerse yourself in a relaxed teaching environment with our wireless voice amplifier. How to connect the microphone and the speakers? Take the microphone out from the back of the speaker, and hold the button on the side of the microphone for 2-3 seconds, and then turn on the speaker, the microphone connect to the speaker automatically. When the connection is successful, the microphone indicator is green and always on, and the "Connect" on the speaker display also be always on. How to improve the sound quality? 1. Place the microphone within 6 inches of your mouth for clearer, smoother sound. If the distance is too far (such as when you turn or tilt your head), the audio may be interrupted or malfunction. 2. Small adjustments to the microphone position and speaker distance can make a , so test the distance for optimal use well in advance. 3. Make sure the microphone's front side your mouth directly. This helps it pick up your voice clearly and accurately and reduces background noise. 4. If the speaker is facing the microphone, it can produce loud feedback. The system try to block out the noise by lowering certain frequencies, which can make your voice muffled or distorted. 5. To better sound quality, the speaker and wireless lapel mic should not be placed too close to each other, or else there may be a delay in sound. 6. To avoid annoying feedback (such as loud screams), always place the speakers at least 20 inches away from the microphone. (If there are any differences in the actual product, it not affect the use) Color: Black Material: plastic Package Contents: 1 * Wireless Speaker 2 * Lavalier Microphone 1 * Belt Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.