Bluetooth UHF Wireless Voice Amplifier Portable For Teaching Lecture Tour Guide Promotion U-Disk Microphone Speaker mesh, high-gloss shell, in paint, after the shell matte. Sound big, good sound quality A key recording, FM radio. Large capacity lithium battery Standard wired microphone. 20 meters wireless PA, no need to carry a heavy loudspeaker, directly on the podium, the desk, just with a wireless wheat can be easily amplified High sensitivity microphone, no noise, 15W high power, large classroom conference room relaxed PA. 15W loudspeaker + 7.4V high voltage, zoom in decibels High-sensitivity microphone, digital smart microphone chip to bring digital noise reduction, combined with the fuselage comes with noise reduction function, through different decibels intelligent judgment to reduce noise. Lasting battery life, built-in high-capacity lithium battery, charging 4-6 hours, sustainable use 12-15 hours. A key recording, recording need to insert TF card or U disk. A variety of interfaces complete, support U disk read, mobile phone playback, TF card reader, radio function, connect the computer to play, recording function. Loop play, , long M key for 3 seconds, you can achieve single cycle / all the two modes of switching cycle. Standard tone screen line, you can insert the body AUX jack, and then connect the computer or mobile phone to do small speakers. Standard belt, body design with a belt hanging hole, can be linked to the back, portable. Widely used:teaching, training, tour guides, conferences, promotions and other occasions and stations, hospitals and and other units. Color: Black Material: ABS Package Contents: 1 * Voice Amplifier 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.