Support wireless Bluetooth 5.0 function, which can realize wireless Bluetooth transmission, and the Bluetooth receiving distance can reach 10 meters. Support USB communication, support video conference terminal and multimedia communication terminal. Built-in microphone 360 omni-directional pickup, pickup radius up to 4 meters. With full duplex echo cancellation, deep echo cancellation and environmental noise, dynamic noise suppression, automatic gain control and other voice processing technologies. Excellent voice playback system, using high-quality speakers with a diameter of 40mm 4ohm 3W, and the speaker volume is large. Bluetooth wireless omni-directional microphone, this product has both wireless Bluetooth connection and USB cable connection to other communication terminals, which is convenient for plug and play. Microphone pickup radius can reach 4 meters, suitable for 30 square meters small conference room and personal office. At the same time, this product is also suitable for distance interactive teaching and students' online work. Built-in 1100mAH li-polymer can be used continuously for 4 hours and standby time is 120 days Multi-system support:for Windows, for MacOSX, for Android, etc. Colour:Gray Material:Plastic+Metal Package Contents: 1 * Omnidirectional Microphone 1 * USB Cable Only the above package content, other products are not included. 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.