Voyager 510S/510SL/510SL+: How to Install the Ear Tips
How do I install the ear tips?
The headsets have small rubber washers on them. When you install the ear tip onto the headset, you should be able to turn the ear tip and lock it into place. If the washer has fallen off it will not lock into place. This unit comes with 3 earpieces: a small, medium, and large. The replacement Ear tip Kit part number for the Voyager 510s is 69652-01. The replacement Ear tip Kit part number for the CS70(N) is 72913-01.