Hi,
Do you mean the numbered parts in this diagram:
If so, here is the complete list of the parts shown in the above image:
1. Indicator light,
2. Earloop
3. Volume keys
4. Answer/end key
5. Earpiece
6. Power key
7. Charger connector
8. Microphone
9,10,11 and 12 show the position and instructions for placing the headset behind the ear.
Hope this solves your problem. For more help and clarifications, please feel free to reply to this post.
Thanks for using FixYa.