Plantronics®, for many years a leader in sound technology, has been devoting a good part of its research to enhancing sound for hearing impaired persons through its Clarity® division. The latest Clarity device to hit the market is its C4230™ telephone/answering machine that looks strictly space-age, but has all the bells, booms, and lights you need if your hearing is mildly to severely impaired right here on earth.
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