Headband headphones bluetooth headphones type of fitting on ear transmission mode cordless features collapsible adjustable headband function rechargeable sound function bass boost sound mode stereo bluetooth bluetooth profile aptx sensitivity 105 dbmw impedance 32 ohm frequency response 6 28000 hz max power handling 1 000 mw driver 40 mm number of drivers 1 operating time 32 h colour white weight 215 g included in delivery audio cable