English 
Headphone:
Driver: 1.6 in (40 mm)
Frequency response: 20Hz-20KHz
Impedance: 39 Ohms (passive), 5k Ohms (active)
Sensitivity: 107dB SPL/mW
Microphone (Boom):
Microphone Pickup pattern: Cardioid (Unidirectional)
Size: 4mm
Frequency response: 100Hz-20KHz
Connection Type: USB
LCD Display: No
Audio Controls: Yes
Microphone: Yes
Microphone Type: Cardioid (Unidirectional)
Noise Canceling: Yes