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'Batphones' aren't for any winged crusaders

They look like giant shells worn on the ears.

Yanko Design

Remember the "Phonofone II"? The thing that looks like an antiquated ear trumpet? You'll never need it if this concept ever becomes a reality.

The "Batphones" appear to use the same kind of "passive amplification" theory--meaning that no electronics are involved, just a single piece of plastic, according to Audio Junkies. They're described as alternative hearing aids, though they could probably be used as natural amplifiers as well. But be aware: You won't be able to use these while wearing an "Office Collar" because you won't be able to fit both of them on your head at the same time.