DERFD120WQ Conference Microphone Wireless+USB Microphone

Spec: Item Type: Conference Microphone Material: ABS Connection: BT 5.0, Wired USB Reverberation Cancellation: -70dB Noise Suppression: 15dB-45dB Sensitivity: -28dB Maximum Sound Pressure Level: 110dB SNR: >68dB Speaker: 4Ω5W Frequency Range: 100-16000Hz Battery Type: Built in 3800mAh Lithium Ion Battery Compatible System: For Windows, for OS X, for Android, for Linux, etc. How to Use: Plug and play. PackageList: 1 xConference Microphone 1 x Data Cable 1 x Sound Cable 1 x Instruction Manual