4-pin RJ9(4P4C) Plug, NOT RJ11 plug, directly connect over the head headset headphone, no additional amplifiers or adapters required.
Provides all day comfort, clarity and durability for Desk Telephone.
Superior quality sound with the flexible adjustable noise cancellation microphone.
Comfortable lightweight design, shirt clips included.
Excellent sound quality, lightweight, durable and comfortable

Technical Details

Product Details

Package Dimensions
Width : 5.2 inch
Height : 1.3 inch
Length : 5.6 inch

Shipping Weight: 0.32 ounce (View shipping rates and policies)

ASIN : B012CBA5LS