Specifications:
Model: GM-1
Driver diameter: 40mm
Impedance: 32Ohm +/- 15%
Sensitivity: 105dB +/- 3dB at 1KHz
Frequency range: 15Hz-20KHz
Mic dimension: 6.0 * 5.0mm
Mic sensitivity: -38dB +/- 3dB
Mic impedance: 2.2kohm
Directivity: All directional
Cable length: Approx. 2.1m¡À0.15
LED working voltage: DC5V +/- 5%
Working current: Below 100mA.
Headset interface: 3.5mm(4pin) + USB (USB for LED light)

Color: Black-Red
Headphone size: Approx. 95*215*205mm/ 3.7*8.5*8.1in
Headphone weight: 298g / 10.5oz
Package size: 213*200*105mm/ 8.4*7.9*4.1in
Package weight: 423g / 0.9Lbs

Package List:
1 x BEEXCELLENT GM-1 Headset
1 x 1 to 2 3.5mm jack cable
1 x User manual

Note:
This headset is NOT USB-Headset, The USB interface is only used for power supply to LED light.