BNK BK8400 4 in 1 Wireless Microphone Set

Cartridge: Dynamic.

RF Output: <10mW.

Frequency Deviation: ±22KHz.

Carrier Frequency Range: 500-700MHz.

Audio Frequency Response: 50Hz-15kHz.

Working Range: 50Meter(under typical conditions).

Battery: AA 1.5V*2 Or AA 1.2V rechargeable battery.

This powerful 4-channel system is perfect for karaoke, school plays and speeches.

The individual volume controls allow you to mix the levels of each microphone.

With four ultra-compact, UHF wireless microphones, you can transmit crystal clear sound from the stage to the audience chair.