YVC-300

YVC-300
Interface USB 2.0 Full Speed (Mini-B), Bluetooth, NFC (Near Field Communication), EXT IN/OUT (stereo mini plug)
Power consumption (max) 2.5 W
Power source USB bus powered
Operating environment Temperature: 0 - 40° C (32 - 104° F), Humidity: 20 - 85% (no condensation)
Dimensions 235 (W) x 46 (H) x 226 (D) mm (9.3 (W) x 1.8 (H) x 8.9 (D) in)
Weight 0.8 kg (1.8 lbs)
Supported OS Windows 10 (32 bit/64 bit), Windows 8.1 (32 bit/64 bit), Windows 7 (32 bit/64 bit), macOS 10.14, macOS 10.13, macOS 10.12
Accessories USB cable 3 m (9.8 ft), User's Manual
Other Firmware update (transferred from a PC/Mac through USB), Option Daisy chain cable (Product number: YCBL-DC3M)
Microphones Unidirectional microphones x 3, 360° coverage 
Speakers Full-range speaker x 1
Maximum volume Momentary maximum: 91 dB (0.5 m)
Frequency bandwidth For sound pickup: 100 Hz - 20,000 Hz, For playback: 190 Hz - 20,000 Hz
Signal processing Adaptive echo canceller, Noise reduction, Automatic tracking, Automatic gain control, Dereverberation

Images of sound pickup range

"Recommended 1.5 m (4.9 ft), Max. 3 m (9.8 ft)"

The sound pickup range depends on the operating environment.