Beltone "Tempo" Eyeglass Hearing Aid The Beltone "Tempo" eyeglass hearing aid was made by Beltone Electronics Corporation of Chicago, IL in 1967. All the electronics were housed in one temple piece. Thus, these eyeglass hearing aids could be configured for one ear, or both ears. In these pictures there is a hearing aid only in the right temple piece. The Beltone "Tempo" used an integrated circuit for its amplifier.
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| View of the rear portion of the right temple piece of the Beltone "Tempo" showing the volume control on the underside of the temple piece ahead of the ear mold tube (left). The words "Beltone" and "Tempo" are molded into the inside of the end of the temple piece. (top right). |  | Click picture for larger view | | | |
| View of the Beltone "Tempo" showing the microphone port—the black hole (top center). This microphone arrangement was unique—a forward-facing microphone on eyeglasses. |  | Click picture for larger view | | | |
| View of the Beltone "Tempo" showing the battery compartment. The battery door swung down from the bottom. This hearing aid used a No. 675 battery. The battery door acted s the on-off switch. Notice the black wire (top left) that joins the electronics in the rear portion of the temple piece to the front portion.
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| View of the dummy arm of the Beltone "Tempo". The name "Beltone" and "Tempo" are molded into the inside of the end of the temple piece. (bottom left). |  | Click picture for larger view | | | |
| Front view of a brown salesman's model (dummy) of the Beltone "Tempo". |  | Click picture for larger view | | | |
| Rear view of a brown salesman's model (dummy) of the Beltone "Tempo". |  | Click picture for larger view | | | |
| Open view of a brown salesman's model (dummy) of the Beltone "Tempo". |  | Click picture for larger view | | | |
| Front view of a black salesman's model (dummy) of the Beltone "Tempo" showing a second design. |  | Click picture for larger view | | | |
| Rear view of a black salesman's model (dummy) of the Beltone "Tempo" showing a second design. |  | Click picture for larger view | | | |
| Open view of a black salesman's model (dummy) of the Beltone "Tempo" showing a second design. |  | Click picture for larger view | | | |
| The Beltone "Tempo" in its original case. |  | Click picture for larger view | | | |
| Outside view of the case of the Beltone "Tempo".
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