Speaker: 10 mm Sensitivity: 98 dB ± 2 dB at 1 KHz Microphone Sensitivity:-42 ± 3 dB Impedance: 32 Ω Frequency Response: 20 Hz-20 KHz RMS: 3 mW Plug Type: 3.5 mm Cable Length: 120 cm / 47 in. Weight: 15 g Sleeves Size: S, M, L