| Item | Parameter | Description |
| Product Appearance |
(The button silk screen is on pending, subject to the final output ID) |
| Audio technical parameters | Acoustic echo cancellation（AEC） | Full-duplex echo cancellation depth can reach more than 65dB |
| Echo length | ≥500ms |
| Two-way noise compression（NC） | Noise compression below 25dB |
| Automatic Direction finding Technology of Intelligent microphone（EMI） | Support |
| Automatic gain control technology（AGC） | Support |
| Audio parameter | Microphone Frequency Response | 100HZ-22KHZ |
| Speaker Frequency Response | 100HZ-22KHZ |
| Pickup range | 4M，360° |
| Speaker volume | Maximum: 85dB |
| Interface | Main Microphone |
|
| Line in/out | 3.5MM audio in/out interface |
| RJ45metwork port | Connect with extended microphone |
| USB Interface | TYPE-B audio in/out interface |
| Power switch | Long press 3S to open the device |
| Expansion Microphone |
|
| RJ45 network port | Connected with main microphone |
| Button description | Button silk screen |  |
| Volume button |  | decrease/increase volume |
| Bluetooth button |  | Turn on/off Bluetooth |
| Off/on hook button |  | Off-hook/on-hook（off-hook enter or exit calling statue when there is a skype for business call.） |
| Microphone mute button |  | Turn on/off microphone |
| Indicator |
|
| Bluetooth status indicator | Blue light flashing | Bluetooth pairing status |
| Blue light is on | Bluetooth is connected |
| Microphone status indicator | Red light is on | Mute the microphone |
| green light is always on | The microphone is working |
| Working status indicator | Red light is on | Mute the microphone |
| green light is always on | The microphone is working |
| Power status indicator | Red light is on | The battery is low and must be charged |
| Flashing green | Charging |
| green light is always on | The battery is fully charged |
| Bluetooth | | Support |
Power supply
| Built-in battery | Built-in 5200mA battery , working duration is more than 8 hours. Standby time 90 days |
| USB | Able to connect with USB |
Application environment and specifications
| Reverberation time | < 0.5 second |
| Noise level | < -48 dBA |
| System | Windows/Andriod/iOS /Linux |
| power supply | AC100~240V，50-60HZ，12W |
| Operating temperature | 0°C-50°C (Operating statue) |
| humidity | 20%-85% |
| Safety specifications | CE MARK (LVD & EMC DIRECTIVE ); ROHS |
| Dimension | 152mm*152mm*38mm |
| Accessories | Standard accessories | USB cable/cascade cable/instruction manual/certificate/warranty card |
| Optional accessories | Bluetooth Adaptor |