Product parameters : Using the Tuned Port technology to bring ultra- wide frequency response range ， high frequency to be more to do，

Broadband low frequency response miniature dive deeper sound unit
Impedance: 32 ohms

Sensitivity : 109 dB SPL / mW
Wire : 1.45m fidelity copper ， headphones and plugs through enhanced treatment

Miniature 3.5mm (1/8 ") stereo gold-plated plug beautifully portable protective bag

Speaker Diameter : 6 (Φmm)
Cable length : Left : 170 mm， right side : 510 mm， ( bifurcation to plug 850 mm) (m)
Sensitivity : 112 dB (dB / mW)
Frequency range : 18Hz - 21kHz (Hz)
Impedance : 32 (Ω)
Sound Quality: Good
Plug : 3.5 (Φmm)