Yamaha unified communication microphone speaker system YVC-330

External interface: USB 2.0 Full Speed, Bluetooth, NFC (near field communication), EXT IN/OUT (stereo mini) Microphone: Unidirectional x 3, Sound collection: Standard: Recommended 1.5m/Maximum 3m, SoundCap: 1m, Speaker: Full range x 1, Volume: Instantaneous maximum 91dB (0.5m), Frequency band Sound collection: 100Hz to 20,000Hz・Playback: 190Hz to 20,000Hz, signal processing adaptive echo canceller, noise reduction, automatic microphone tracking, Auto gain control, dereverberation, SoundCap Power supply USB bus power drive: 5V/500mA, AC power drive: AC100V (50/60Hz) *AC adapter sold separately. Compatible OS: Windows 10 (32bit/64bit), Windows 8.1 (32bit/64bit), Windows 7 (32bit/64bit), macOS 10.14, macOS 10.13, macOS 10.12, USB: USB 2.0 or later Bluetooth: Ver.2.1+EDR, Compatible profiles: HFP(1.6), A2DP, Compatible codecs: CVSD, mSBC, SBC, Wireless output: Class2, Maximum communication distance: 10m (no obstacles), NFC Compatible models: NFC Compatible Android devices