Colors black 1) frequency response: 20Hz-20KHz
Style Wired Noise Cancelling headphone 2) active noise attenuation: 100-1000Hz >15dB at 300HZ
Color Box Size 22.5×21×9.5cm 3) sensitivity: 110B +/- 3db at 1,000 Hz
Inner Packing Inner packing: 1 unit/white box 4) Max. input power: 500mW
CTN size 52.5*50*28CM 5) driver unit: 40 Ø mm
Packing 24 units/carton 6) impedance: 32 Ohms at 1,000 KHz
N.W/CTN 10.44kg 7) Cord length: 1.5m
G.W./CTN: 11.93 kg 8) power supply: 2xAAA 1.5V batteries