Features:        • The hardware supports CD-quality music or presentation audio up to 22KHz and enjoys high-fidelity voice sound quality;        • Stereo microphone pickup, you can enjoy the freedom to move around in the work space during a call;        • Support PC and mobile phone access, whether you call or have a video conference, you can directly access;        • Designed with PC automatic charging function, no need for charger, no external wiring, no setting, pull out from the receiver, plug and play;        • It has the function of cascade expansion. In the larger conference room, two or more conference microphones can be connected in series.                          Technical Parameters& 65306;        • Microphone output sensitivity: -35dB                  • Microphone frequency response: 20Hz-20KHz                 • Input voltage: 1V                 • Recording: stereo dual-channel 24bits / 9KHz                 • Playback: High-fidelity 24bits / 96KHz                 • Direction: Omnidirectional                 • Output power: 2.5W                 • Battery specifications: 3.7V / 800mA                 • Charging time: 2-3 hours                 • Operating time: about 8 hours                 • Charging specification: 5V / 500mA                 • Net weight: 280g                                   Scope of application& 65306;         Suitable for video calls, conference calls, music appreciation, etc.                          The standard configuration& 65306;        • Q Microphone            1 pc        • Mobile phone stand   1 pc        • instruction manual      1pc