- Ultra light & comfortable - Ideal for use with portable audio equipment # Tech Spec's/ Type: Open-air, dynamic - Driver unit: 9.2 mm (0.36 in.) diameter - Impedance: 16 Ohms - Sensitivity (SPL): 100 dB/mW +- 3dB @ 1kHz - Power handling capacity: 100 mW max. - Frequency response: 20 Hz - 20 KHz @ -3dB - Cord length: 1.5 m (4.9 ft) long - Plug: 1/8" Stereo mini-plug (Ø 3,5mm / 0.1 in.) - Weight: 20 g (0.6 oz.) w/ cord.