Acoustic tube and Medium Earmold easy to be Replaced and operated; Replacement Acoustic tube: Covert acoustic air tube transmits more clear sound and protect the eardrum from sound wave ...

A high-quality one-wire surveillance kit for environments using radios with simple 1-pin connectors that fits snugly around the ear to keep ... High-quality Earpiece provide clear audio communication.

Before the MP3 was the Walkman and before that was the "tranny" - the transistor radio. Personal radios existed before their mass popularity in the 1960's, but then they became a teenage 'must-have'.

Researchers from the École de Technologie Supérieure in Montreal, Canada, and Geisel School of Medicine at Dartmouth in Hanover, NH, are exploring using earpiece microphones to detect early ...

for its CrewCom lineup of radio transceivers (RTs), it said. The in-ear headset offers an unobtrusive, miniature electret microphone and windscreen with a small flexible boom. Models supporting ...

Crystal radios can feel magical ... To make it into a usable earpiece, the tip of a pen is cut off and glued to the buzzer’s plastic housing. Then, a rubber in-ear cup from regular modern ...

Before the MP3 was the Walkman and before that was the "tranny" - the transistor radio. Personal radios existed before their mass popularity in the 1960's, but then they became a teenage 'must-have'.