MRD-891ENC Duo USB Headset

Description

MRD-891ENC Duo

All-day-ease

• The over-the-head style, ultra-lightweight materials, and
  bio-mimetic protein-based leather ear cushions are easy on your
  head and ears. Its ergonomic design makes MRD-891ENC Duo
  comfortable enough for long conference calls and all day use.

Unparallel Audio Experience

• Made for calls, this headset is kitted out with wide-band HD
  audio technology and passive noise cancellation that ensures a
  richer and clearer conversations, eliminates background noises
  as well.

Intuitive in-line controls

• Easily answer or end calls, adjust volume, and mute/unmute
  calls at your fingertips.

Dual Microphone

• With dual microphone active noise reduction technology to
  block out 99% of background noise.

Please make sure that the hole for background sound pickup
should not be blocked for best noise cancellation effect!

MRD-891ENC Duo Technical Specifications

Headset Speaker

1. Drive Style Dynamic :  (Moving-coiled)
2. Outer Diameter :  φ 28mm ± 0.2mm
3. Resistance 32 Ω ± 15% ohm
4. Frequency Response : 50-10kHz
5. Sensitivity : 110±3dB
   (at 1kHz 1mW, Input 0.178Vrms)
6. MAX Input : 30mW
7. Rated Power : 20mW
8. Distortion : Less than  3%

Microphone on headset

1. Outer Diameter : Φ 4mm
2. Height : 1.5mm
3. Directivity : Omnidirectional
4. Sensitivity : -42 ± 2dB (0dB=1V/Pa, 1kHz)
5. Impedance : 2.2K ohm
6. Frequency Range : 50 ~ 16kHz
7. Distortion : Less than 3%
8. Current Consumption : Max 0.5mA
9. S/N Ratio : More than 62dB