Feature:
1. This office headset is for RJ9 connectors, having 330 degrees  rotatable head for fit your head size , 330 degrees  rotatable microphone boom for wearing mic on either side.
2. Phone headset with noise cancelling microphone and HD audio sound ensure easy and clear communication for call centers, offices and home phones even in a noisy environment.
3. With super soft protein leatherette ear cushion, adjustable headband to fit for different head sizes, ear cover rotatable, no pain for you all day long wearing.
4. Light weight and strong design, superior quality speaker and noise canceling microphone, reliable plastic parts. Anti acoustic shock for hearing protection.
5. Reinforced cord built with for Kevlar to withstand demanding environment and protect against office chair wheels, sharp objects for daily heavy use.
Specification:
Item Type: Binaural Headset
Material: ABS
Application: Suitable for devices that can be connected to the RJ9 interface, ideal for Skype chat, business, call centers, conference calls, listening and speaking, long speaking, online courses, web seminars, etc.
Rotatable Head Card 330 degrees 
Rotatable Swing Arm 330
Speaker Parameters:
Sensitivity: 105+  3dB (At 178mV 1KHz)
Voice Coil Impedance: 150+  15 Ohm  (1KHz)
Frequency Characteristics: 100Hz 10KHz
Distortion:  less than 5percent  (At 178mV 1KHz)
Microphone Parameters:
Directivity: Unidirectional
Sensitivity:  40+  2dB(2.0V, 2.2K Ohm , 1KHz)
Distortion:  less than 5percent  (At 4.5V 2.2K Ohm  1KHz)
Frequency Characteristics: 200Hz 6KHz
Current Consumption: 100 500υA.
Package List:
1 x Binaural Headset1 x Manual