1. Type：2*3.5mm 

2.Speaker size： 40MM

3.Backlight mode:  Without Backlight 

4.USB sound channel and IC:  NO

5.With or without microphone: With Mic (external)

6.Cable: Exposed 1.8m PVC  cable

7.MIC size： 6 x5

8.Directionality:omnidirectional

9.Mic Sensitivity: ：-60db±2 db

10.Speaker Sensitivity: ： 105db±2 db

11.MIC lights or without lights: without lights

12.line control volume

14.Impedance: 32Ω at 1kHz