<p>Compatibility: For Computer, SLR Camera, Speaker, Sound Card.Suitable for small meetings, live broadcasts, speeches, blog recordings, video recordings etc.Intelligent noise reduction, clearer and more detailed human voice, built-in noise reduction chip, Turn on the intelligent noise reduction function by default upon startup.It Can Be During Use. Support mute mode and reverb mode.</p> <p>Noise reduction: default AI intelligent noise reduction</p> <p>Reverberation: supported, requires manual switching</p> <p>Mute: Supported, requires manual switching</p> <p>Transmission distance: obstacle free distance \u2265 15 meters; The distance between human obstacles is about 7 meters</p> <p>Transmission protocol: 2.4G channel</p> <p>Delay: \u2264 30ms.</p> <p>Directionality: -38dB \u00B1 3dB omnidirectional silicon microphone.</p> <p>Frequency response: 20Hz-20KHz</p> <p>Sampling rate: 32KHZ or 48KHZ</p> <p>Signal to noise ratio: \u2265 64dB</p> <p>Microphone battery\/usage time: 80MAH\/6H</p> <p>Receiver battery\/usage time: 120MAH\/6H</p> <p>Working current at the transmitting end: 11-12mA</p> <p>Working current at the receiving end: 20-21mA</p> <p>The battery charging time is about 1.5 hours</p> <p>Charging input voltage DC5.0V</p> <p>Charging adapter: 5V\/1A</p> <p>Working temperature -10 \u2103~45 \u2103</p> <p>Colour: Grey</p> <p>Material: ABS</p> <p>Package Contents:</p> <p>1 set x Wireless Lavalier Microphone</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>