1. Use USB driver-free design, built-in high-power mid-woofer speaker 2. 256ms echo cancellation algorithm, built-in voice automatic gain balance (ALC) function, no matter how far away the speaker is, the sound can be picked up clearly 3. 360-degree omnidirectional high-sensitivity dual-capacitor microphone, no dead spots for radio within 20-30 square meters, one person can walk around freely during a meeting, and when a multi-person meeting, everyone can sit in their own position at ease without being particularly close or Is a mobile omnidirectional microphone 4. Built-in high-performance intelligent DSP chip, input and output audio directly on the chip for high-speed calculation processing, not only can effectively block noise, eliminate echo, high-speed processing of high-q