ITEM NAME:Wireless Headset Microphone Handsfree Mic for Speaker Teacher Meeting Classroom Product Description Description: Feature: 1. High definition digital tube display frequency makes the operation more convenient. 2. The built-in polymer battery can not only be reused for charging, but also be used safely with light weight. 3. One time charging, more than 10 hours use, long battery life. 4. Multiple channels are optional, and 200 optional channels will not interfere with each other. 5. There is no restriction on the loudspeaker products. As long as it is an electronic device that receives FM broadcast signal and has audio playback function, it can be used as a loudspeaker immediately. 6. Small and exquisite, easy to carry and enlarge anytime and anywhere. 7. It is widely used in teaching, tour guide, promotion, lecture, meeting, karaoke, singer singing and other purposes. 8. With a single wireless FM microphone, 200 speaker devices and public address can play at the same time. 9. The transmission frequency is clearly displayed. When working, the monitor will turn off automatically, saving energy. 10. Exquisite appearance and comfortable hand feel. The buttons "+" and "-" can not only adjust the frequency, but also adjust the volume. 11. High sensitivity microphone head design, with high pickup effect. Specification: Color: Black Transmission frequency: 87.5 Mhz to 108Mhz Sensitivity: -39dB  ± 1dB Batarry capacity: 230mA Voltage: DC 5V Emission frequency: 87.5MHz~108MHz Charging time: 1~2hours Output resistance: ≠¤68 Ohm Operationg voltage: DC 3.3V-5V Effective distance: 10m/2.8feet Operating time: 5-6 hours Operating Steps: 1. Switch on the main power supply of microphone, and the Screen will display radio station band number. 2. Press the"+" "-" key to adjust the radio frequency, and choose a band number between 87.5MHz~108MHz. (Note: Select the number that it dose not exit in local radio frequency bands, for example 89.7) 3. Turn on the machine that with FM rad.There is no restriction on the loudspeaker products. And you can use the Wireless microphone after the machine matching pair with the ratio frenquency. High sensitivity microphone head design, with high pickup effect.
