New K321 headphones along with excellent frequency response in closed earplugs, passing high-fidelity sound, headphone cable tube design blocks ambient noise. This is Zhenwofengcai from AKG lightweight headset long time equally comfortable to wear.
Frequency range (Hz-kHz) 13-22.5 (White) 13-22.6 (Blue)
Impedance (ohms) 16
Sensitivity (dB spl / V) 121
Maximum Input (mW) 19
Line length (length in m) 1.0