Connection type    Wired
Type of headphones    In-ear
Membrane diameter    10 mm
Impedance (headphones)    32 Ohm
Impedance (microphone)    2.2 kOhm
Sensitivity (headphones)    105 dB
Sensitivity (microphone)    54 dB
Frequency response (headphones)    20–20000 Hz
Frequency response (microphone)    20–16000 Hz
Cable length    1.2 m
Connectors    4-pin 3.5 mm jack
Material of headphones    Plastic
Color    Black + grey
ROHS / CE    Yes