1. High-definition digital tube display frequency, makes operation more easy and convenient.2. The built-in polymer battery, not only can be used repeatedly charging, and light weight use safety.3. A single Charge , can always use more than 10 hours, long battery life4. Super multi-channel optional, will not interfere with each other 200 optional channel5. There is on the amplification products, mainly to accept FM radio signals and electronic equipment with audio playback function can be used instantly into a .6. Small and exquisite, portable, amplification function anytime and anywhere.7. Widely used: teaching, tour guide, sales promotion, lectures, meetings, karaoke, fans singing and so on .8. The use of a single wireless FM microphone, can make two hundred loudspeaker devices and public address broadcast at the same time, about what the situation.9. Emission frequency display clearly. When worked, Display will go out automatically that save energy .10. Delicate appearance, comfortable hand , the key"+", "-"can not only regulate frequency can adjust volume.11. High microphone head design, with high pickup sound effect.color:BlackMaterial:plasticPackage Contents:1 x FM Headset Handsfree setOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.