Listen Technologies’ LA-408 headphone features dual over-ear speaker design to offer improved noise isolation and increased clarity in high-noise environments. Headphone Impedance 32 Ohms @ 1KHz Headphone Bandwidth 80 Hz - 15 kHz Noise Reduction Rating (NRR) 24.3 dB Cable Length 100 cm (39 in.) Unit Weight 363 g (12.8 oz.)