From the manufacturer

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Headphone TypeClosed Dynamic
Driver Unit12mm
MagnetNeodymium
Wearing StyleIn-ear
Sensitivities (dB/mW)111dB/mW
Frequency Response (Hz)4-24・000Hz
Impedance (Ohm)16 Ohm (1kHz)
Power Handling Capacity100mW
Cord LengthApprox.1.2 m・ Litz wire・ Y-type
PlugL-shaped gold-plated four-conductor mini plug
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WeightApprox. 9g
WaterproofIPX5/IPX7
Unit of MicrophoneElectret Condenser
Direction of MicrophoneOmni Directional
Effective Frequency of Microphone20-20・000Hz