Nanon ii earphone 1, speaker dimension: 6u ª)15mm diameter mylar speaker 2, plug:3.5mm stereo plug 3, cord length:120cm 4, frequency response:20-20khz. 5, impedance:32 ohm+/-10% 6, sensitivity:105+/-3db s.P.L(at 1khz) 7, colors:blue, green, pink, black, white