Discovery 640/645: How to insert or remove the gel earpieces
How to insert or remove the gel earpieces on the Discovery 640 & 645?
1. Select the ear tip you wish to use. 2. Hold the ear tip with the elongated edge pointing down, and push the ear tip post into the hole on the headset. 3. Twist the ear tip to the side and put the headset on with the elongated side of the ear tip pointing up and forward. To Remove: line up the elongated side of the ear tip so that it is parallel with the headset, and pull it straight out.