Pairing bluetooth device to the SDW5016 headset: Turn on the bluetooth on your device (phone, tablet, computer etc). Connect dongle to the right hand side of the charging base (if not yet connected). Press and hold the button on the dongle unti it begins to flash red/blue (the dongle is now in “pairing mode”). Search for the SDW 5016 in your phone, tablet, or computer. The device name will be “Sennheiser BTD 800 USB”. Select the headset on your phone, tablet, or computer. You are now paired! To disconnect bluetooth press and hold the button on the dongle for 3 seconds until it flashes red To re-connect bluetooth press and hold on the button on the dongle for 3 seconds until it flashes blue