If you have more than one Bluetooth device, are they referred to as?

[Makka Pakka]

"Bluetooths" or "Blueteeth?"

[Leo R]

It is much better to sidestep issues like these so the listener doesn't get his attention diverted by your choice of words. Say "Bluetooth devices."

But if you insist on using one word, it would be "Bluetooths."

This comes up all the time, and you never use the irregular plural with a proper noun:
We stayed at the Blue Ox Inn. There are Blue Oxes all over the U.S. [not "Blue Oxen"]

[Sal Monella]

No and No. The correct way is to say "...my Bluetooth devices..."

[Leo R]

It is much better to sidestep issues like these so the listener doesn't get his attention diverted by your choice of words. Say "Bluetooth devices."

But if you insist on using one word, it would be "Bluetooths."

This comes up all the time, and you never use the irregular plural with a proper noun:
We stayed at the Blue Ox Inn. There are Blue Oxes all over the U.S. [not "Blue Oxen"]

[Eartha Rides Again]

I'd describe it as self indulgence.