When the ear bud fits properly, it should be sealed in your ear so that you feel a slight amount of resistance when you remove the headset from your ear.
To remove the earbud - Gently twist the ear bud while pulling it off the speaker post.
To add an earbud - Press the ear bud onto the speaker post with the stem side of the ear bud facing downward.
Note: Try using different size ear buds on the headset and stereo plug in cable: do not assume that you need the same size for both ears.
76776-01 - Ear bud replacement pack (2 Small, 2 Meduim & 2 Large)