The groov e fusion headphones are unique in that they can playback both wirelessly and with a wire bluetooth connectivity allows the headphones to playback wirelessly for up to 10 hours ndash making them ideal for users on the go a built in microphone also allows users to make phone calls hands free whilst in the car at the office or on the move a micro usb charger is included for re charging the headphones and within 2 hours users are back on the move with up to 10 additional hours or wireles