Guess what this is

[Kahnescanuck]

a handsfree set for cell phone

[Yorick]

some, demented sort of head phones?

[Volkoronado]

Nope, none of that would be it.
Remember it doesn't help the phone itself
(Ok this is kinda difficult so I'm posting the standard model, see if it helps, since you already know it is used in conjuction with cell phones )

[Yorick]

a radio receiver?

[Jones]

Some GPS device...I don't know!

[Volkoronado]

Here's another hint: there's a hole behind the animal where you can fit your finger.
This could well be considered the most awkward cellphone gadget ever created!

[Yorick]

gtg nows

[Jones]

A video camera?

I am at a loss

Buh bye! Yorick!

[Volkoronado]

*Waves goodbye* See you Yorick!
Ok, let's gather what I've said about it once more:
- It is strapped to a cellphone.
- It enhaces quality sound.
- It can be put in your finger.
- It is considered a cellphone accesory.
- It DOES NOT help the cellphone's functionality in any way.
Think, what else could it do?

[Jones]

Did you see my post?
Oh. Nvm.


Play music?

[Volkoronado]

Yes Jones, but it isn't a video camera either
It isn't an electronic device.

[Jones]

I'm really confused now

Wait a minute, does it mute the sound?

[Volkoronado]

Well, what could you use it for?

[Jones]

Well, I was thinking that it shuts out all outside sound so you can only hear the cell phone conversation. Eh?

[Volkoronado]

Well after you used it, you'd certainly hear the phone conversation a lot better than before.
You're overthinking it, but still getting closer