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)Condition: 100% Brand NewItem Type: MicrophoneModel: V16UMaterial: ABSColor: BlackInput2.2-3 VWorking Current90 mAMaximumWorking Frequency268.85MhzFixedSensitivity-50 +/- 3dBTotal Harmonic Distortion: <0.7SNR>110 dbDelay Time: < 5msFrequency Response: 50 Hz~18 kHzPower Supply: Each Microphone Need 2 x AA Battery(Not Included)Working Temperature: -10-50Weight: Approx. 345g Package List2 x Microphone(Not Included Battery)1 x USB Receiver1 x Audio Cable1 x AdapterNoteIt cannot be used directly for PC or laptop.