Top-Grade Internet cafe vibration gaming headphone 

·Loudhailer diameter: 50mm (NdFeB)

 ·Glittering with breathing rhythm

 ·7.1 simulated sound channels

 ·Frequency range: 20~20KHz

 ·Sensitivity: 108dB +/- 3 dB at 1 kHz

 ·Impedance: 32 Ohm at 1 kHz

 ·Max Input power: 45mW

 ·Cable length: Approx.2.5m

 ·Approximate Weight: 380g/ 0.84lbs

 ·Input Plug: USB

 (USB connection provides power)