Clip Type Earphones Panasonic RP-HS34E-K Black, w/o Mic, 1 x mini-jack 3.5mm Driver Unit (diameter in mm) : 14.3 Magnet Type (Nd:Neodymium / Fe:Ferrite) : Nd Impedance (Ohm) / 1 kHz : 23 Sensitivity (dB / mW) : 112 Max. Input (mW) : 200 (*IEC) Frequency Response (Hz - kHz) : 10 Hz - 25 kHz Cord Length (m / ft.) : 1.2 / 3.9 Weight (g) without cord : 9.5 MiniPlug (3.5mm in diam.) : yes Plug (Ni:Nickel / G:Gold) : Ni