Beta87A Vocal MicrophoneSupercardioid, CondenserFrequency response: 50 to 20,000 HzWide dynamic range (117 dB) and low distortion characteristicsULX2 Handheld Transmitter8-9 Hour Battery LifePower: On/Off Switch, BatteryLED-Green When ON, Red When Battery LowThree-segment Battery Power IconPEAK Icon-Appears When Audio Signal OverloadsGroup/Channel DisplaysSET Button for Saving SettingsAdjustable Audio Gain ControlInput Attenuation Switch-Select 0dB for Voice/Low Output; 20dB for High Output4-pin