1. UHF WIRELESS TECHNOLOGY FOR LONG DISTANT TRANSMISSION
2. BUILT-IN RECHARGEABLE BATTERY FOR RECEIVER
3. MANUAL SCAN FREQUENCY(BUILT-IN 10-CHANNAL CHOOSED)
4. AA BATTERY FOR HAND MIC.
5. SUIT FOR WIRELESS AMPLIFICATION
6. FOR SMALL SHOW, TEACHING, TRAINING, MEETING, PROMOTION, ETC.