Stereo pc headset jack 35 mm suitable for iphone mp3 player design on ear type semi open transmission mode cable type of connection 2x 35mm jack type of cable double sided length of cable 12 m sound mode 20 hardware type of headphones headband features adjustable headband collapsible max power handling 40 mw headphone transmission range 20 20000 hz sensitivity 105 dbmw headphone impedance 32 ohm driver 40 mm colour white included