Specifications:
Driver diameter: 40mm
Impedance: 32Ohm
Sensitivity: 105dB +/- 3dB at 1KHz
Frequency range: 15Hz-20KHz
Mic dimension: 6.0 * 5.0mm
Mic sensitivity: -38dB +/- 3dB
Mic impedance: 2.2kohm
LED working voltage: DC5V +/- 5%
Headset interface: 3.5mm + USB (USB for LED light)
Cable length: Approx. 2.2m / 7.22ft
Headphone size: Approx. 20 * 9 * 21.5cm / 7.9 * 3.5 * 8.5in
Headphone weight: 330g / 11.6oz
Package size: 22 * 9.7 * 23.6cm / 8.7 * 3.8 * 9.3in
Package weight: 538g / 1.17Lbs

Package content:
1 x EACH G9000 Headphone

Notice:
The USB is just for LED lights to work, the headphone couldn’t work only with the USB, it has to plug the 3.5 mm plug at the same time