There's a connected hearing aid, and it actually sounds useful

The Oticon Opn ensures you hear an alarm, door bell or smoke detector. Hearing aid that connects to the Internet of Things, and before you dismiss it, this device seems like it will definitely lend a hand. London-based Oticon announced the Opn: a connected hearing aid that ensures the user knows when someone rings the doorbell, the smoke detector goes off or a baby monitor is chiming. Thanks to TwinLink technology, the Opn doesn't sacrifice size or battery life for connectivity.

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