Function: 1. Highly sensitive noise cancelling microphone, suitable for meetings, voice, games, karaoke, etc. 2. The 360 degree multi-directional radio head can easily record your voice and play back sound. 3. The microphone is adjustable and the metal gooseneck hose can adjust the direction and height of the speaker in all directions and at multiple angles. 4. Durable, one-button power switch, anti-interference chip base, very convenient. 5. Wired conference microphone with 3-pin XLR audio output jack for easy connection to a power source. Specification: Item Type: Gooseneck Microphone Material: ABS Energy Conversion Method: Capacitive Frequency Response: 60Hz-16KHz Directionality: Cardioid Output Impedance (om): 200 Ω Sensitivity: -40 dB 2 dB Effective reception distance: 40 cm Audio cable length: 5m/16,4ft Supply Voltage: 3V How to use: 1. Install the battery in the microphone and connect the audio output line 2. First, set the volume of the power amplifier to “0”, then turn on the power switches of the power amplifier and microphone, and then adjust the volume of the power amplifier until you get the best effect. List of packages: 1 x Microphone (Battery Not Included) 1 x Protective Cover 1 x Manual XLR cable 1 x 6,5 mm