Dect headset headband headset series jabra pro transmission modes dect wireless sound mode stereo type of headphones headband type of connection usb 20 suitable for pc laptop talking time 11 h standby 46 h features adjustable headband microphone noise reduction volume control range 150 m charging time 2 h weight 70 g headphone transmission range 150 6800 hz colour black call functions muting end call answer call type of fitting on ear