yealink yhs34 mono analog wired headset - qd to rj9

Perfectly compatible with Yealink Phones Runs right out of box, a QD to RJ9 plug-and-play setup makes the connectivity to Yealink IP phones. The phones can automatically optimizes acoustic parameters for your YHS34/YHS34 Lite. Perfect match with Yealink desk phones give you opti- mized audio quality. Unparallel Audio Experience Made for calls, YHS34/YHS34 Lite is kitted out with a high signal-to-noise ratio speaker and independent cavity design. The passive noise cancellation creates a richer and clearer conversations with reduced background noise. Ultra-lightweight, All Day Wearing Comfort Built for comfort with soft ear cushions and ultra-lightweight materials, the YHS34/ YHS34 Lite is 10%~30% lighter than other headsets in the same range.

Its ergo- nomic design makes this headset comfortable enough for long conference calls and all day use.
General Headset cable length: 0.9 m QD to
RJ9 cable length: 1.2 m
Color: Black
Storage temperature: -30 C to +70
C Operating temperature: -10 C to +50 C
Microphone Microphone type: Uni-Directional ECM Microphone frequency response range: 100 Hz-8 kHz
Microphone bandwidth: Wideband
Microphone Sensitivity: - 44.0 dB re. 1 V/Pa
Speaker Speaker size: 28mm
Speaker sensitivity: 93 dB SPL @ 1 kHz Speaker
Frequency response range: 20 Hz-20 kHz
Speaker impedance: 32?, @ 1.0 kHz
Speaker input power: max 10 mW
Speaker bandwidth: Wideband