Features:
Headset with Microphone and Volume Control.
High quality and fashionable appearance.
Soft earmuffs and adjustable hinges for comfortable wearing. 
Ideal for internet chat， VOIP (voice-over-IP)， computer， gaming， etc. 

Specifications:
Brand: Cosonic
Model: CT-770
Color: Blue/Black
Microphone specification:
Microphone dimensions: 6 (diameter) * 5mm
Sensitivity: -58dB +/- 3dB
Directivity: Omni-directional
Impedance: 2.2kohm
Speaker specification:
Driver diameter: 40mm
Impedance: 32ohm +/- 15%
Frequency response: 20~20 kHz
Input plug diameter: 3.5mm
Sensitivity (S.P.L): 95dB +/- 3dB
Cord length: Approx. 1.8m / 5.9ft
Headphone weight: 190g / 6.7oz
Package size: 20.8 * 18 * 8.5cm / 8.2 * 7.1 * 3.3in
Package weight: 276g / 9.7oz

Package list:
1 * Headphone