Brand: JABRA
World-class speakers and HD voice for calls and music. Active noise-cancellation for eliminating low-frequency sounds, such as the hum of air conditioning. Superior ANC and integrated busylight acts as a do not disturb sign to enhance productivity Dual Bluetooth connectivity to two devices at the same time for calls and music. Leather-feel ear cushions and on-the-ear design for all-day use Headset bandwidth: Wideband, Speaker bandwidth music mode: Hi-Fi, Speaker bandwidth communication mode: 150 Hz 6.8 kHz, Speaker size: 40 mm, Microphone bandwidth: Wideband, Microphone type: Medium-length boom-arm with noise-cancelling uni-directional ECM microphone, Microphone frequency range: 150 Hz 6.8 kHz, Audio control: Speaker volume up/down on headset, Passive noise-cancellation: Yes, Active noise cancellation: Yes Hybrid 4 mic ensuring 17 dB (perceived cancellation in an office environment)