In ear headphones ergonomic design reinforced cables colours black white pink series aircoustic retro style type of fitting in ear transmission mode wired features gold plated jacks headset compatible with ios sound functions passive noise reduction in line volume control sensitivity 101 dbmw impedance 32 ohm frequency response 20 20000 hz max power handling 60 mw driver 11 mm types of cable flat cable tangle free jack 35 mm jack shape