1. UHF system, 700-960MHZ professional frequency  2. LCD display AF level, RF level, channel value, frequency value, and battery life of transmitter and receiver  3. Power off automatically under low valtage to protect inside accumulator  4. PLL synthesized design, 32 selectable channels  5. Auto-setting the TX channel by IR communication  6. Built-in switching power of large power and accumulator battery of large capacity, suitable for all kinds of situations  7. Auto-scanning channel to ensure the channel interference free  8. Digital pilotone & noise cancellation technology, reduce interfering noice.  9. Receiver adopting the internal antenna.  10. Convenient for either shoulder-hanging, handheld or placing on the desk  11. Audio output being able to be connected with larger speaker for better result.  12. Advanced SMT to ensure the quality.  13. Multi-receivers of the same channel can be used simultaneous to enlarge the volume  14. Using ordinary or rechargeable battery one unit for handheld transmitter and two units for body-pack transmitter