• Sound Mode: Mono
• Impedance: 32 Ohm
• Minimum Frequency Response: 20 Hz
• Maximum Frequency Response: 20 kHz
• Noise Canceling: Yes
• Sound Pressure Level: 93 dB
• Features: 
  • Lightweight
  • Comfortable
  • Plug and Play
  • Ergonomic Design
  • Passive Noise Cancellation
  • Quick Disconnect
• Earpiece Design: Over-the-head
• Earpiece Type: Monaural
• Driver Size: 1.10″
• Microphone Design: Boom
• Microphone Technology: 
  • Uni-directional
  • Electret
• Integrated Microphone: Yes
• Detachable Microphone: No
• Host Interface: RJ-9
• Color: Black
• Weight (Approximate): 3.20 oz
• Package Contents: 
  • Wideband Headset for Yealink IP Phone
  • Leather Ear Cushions
  • QD to RJ9 Cable
  • Quick Start Guide
• Compatibility: Yealink IP Phones:
  
  • T19(P)
  • E2/T21(P)
  • E2
  • T23P
  • T23G
  • T27G
  • T29G
  • T30
  • T30P
  • T31
  • T31P
  • T31G
  • T33P
  • T33G
  • T40P
  • T40G
  • T41S
  • T42S
  • T46S
  • T48S
  • T42U
  • T43U
  • T46U
  • T48U
  • T53
  • T53W
  • T54W
  • T57W
  • T58A
  • VP59
  • T41S SFB
  • T42S SFB
  • T46S SFB
  • T48S SFB
  • T55A SFB
  • T56A SFB
  • T58A SFB
  • MP56

Package Contents

• Wideband Headset for Yealink IP Phone
• Leather Ear Cushions
• QD to RJ9 Cable
• Quick Start Guide