6how to press the headset into the headband ring on the headband.Hold the headband in one hand and the headset inthe other. Align the headset against the outside of theheadband ring with the headset cable pointing down.Gently press the headset into the headband ring until itclicks into place.wearing the mono heaDset with an ear hookTwo sizes of ear hook are included with some Jabra BIZ 2400 models, they can also be purchased as an accessoryfor any mono model. To use it:1. how to attach the ear gel.The ear gel is a round rubber part which helps stabilize the headseton your ear. Place the ear gel inside theear hook ring. Gently push the ear gel through the hole so that it sitsin the hole. Once you click the headset into the ear hook ring, the eargel will be locked into place.2. how to press the headset into its ear hook ring on the ear hook.Hold the ear hook ring in one hand and the headset in the other.On the inside surface of the ear hook ring you will find "L" and "R"markings. Align the cable of the headset with the "R" marking if youwish to wear it on you right ear, or "L" if you wish to wear it on your leftear. Gently press the headset into the ear hook ring until it clicks intoplace.3. how to position the ear hook on the ear hook ring for left or right ear use.The ear hook wearing style has two parts: an ear hook and an ear hookring. One end of the ear hook forms a pin that presses into a loop on theear hook ring and holds it there.You will wear the headset with the ear hook behind your ear and the earhook opening pointing down towards your jaw. Decide on which ear youwould like to wear the headset and assemble the ear hook and ear hookring appropriately.To change from one ear to the other, pull the ear hook up and away fromthe loop, and press into the other side of the loop. Then remove theheadset from the ear hook ring. Rotate it and replace it again with the cablepositioned at the ‘L’ or ‘R’ for the selected wearing side as described in point 2. RLRL