Feature: 1. VHF universal wireless microphone in hand, karaoke speech, plug and play, wider frequency range, less interference, easily perfect display your voice. 2. Adopts strict control of electronic circuit, rich and full sound can captured from source directly in front of the microphone. 3. for all activities such as karaoke, live performances, meetings, churches, schools, auditoriums, parties, etc. 4. USB receiver supports a variety of devices, wide device support applications, device with USB port and microphone interface, can connected to use. 5. Stable signal remote reception, constant frequency within 50m without noise, strong antiinterference capacity, wireless receiver with receive range of 50m(without strong interference) Frequency Range: :266.85MHz